diff --git a/spot/twaalgos/translate.cc b/spot/twaalgos/translate.cc
index 806aa522b..2123e039a 100644
--- a/spot/twaalgos/translate.cc
+++ b/spot/twaalgos/translate.cc
@@ -186,6 +186,21 @@ namespace spot
               rest.push_back(child);
           }
 
+        // Safety formulas are quite easy to translate since they do
+        // not introduce marks.  If rest is non-empty, it seems
+        // preferable to translate the safety inside rest, as this may
+        // constrain the translation.
+        if (!rest.empty() && !oblg.empty())
+          {
+            auto safety = [](formula f)
+              {
+                return f.is_syntactic_safety();
+              };
+            auto i = std::remove_if(oblg.begin(), oblg.end(), safety);
+            rest.insert(rest.end(), i, oblg.end());
+            oblg.erase(i, oblg.end());
+          }
+
         if (!susp.empty())
           {
             // The only cases where we accept susp and rest to be both
diff --git a/tests/core/ltl2tgba2.test b/tests/core/ltl2tgba2.test
index 588e7b57e..4e2d48305 100755
--- a/tests/core/ltl2tgba2.test
+++ b/tests/core/ltl2tgba2.test
@@ -390,3 +390,13 @@ cat >expected <<EOF
 4,12,1
 EOF
 diff out expected
+
+# This was reported by Maximilien: in Spot 2.6, ltl2tgba "$f" has 8
+# states, but the automaton is larger with -GD because of ltl-split.
+# This is a case were we want (a R !b) & (c R !d) to be translated
+# along the rest of the formula, i.e., ltl-split should not translate
+# it separately.
+f='(a R !b) & (c R !d) & G((!b | !d) & (!a | Fb) & (!c | Fd) '
+f=$f'& (!b | X(b | (a R !b))) & (!d | X(d | (c R !d))) & F(a | !b) & F(c | !d))'
+test '8,1' = `ltl2tgba "$f" --stats=%s,%d`
+test '8,1' = `ltl2tgba -GD "$f" --stats=%s,%d`
diff --git a/tests/python/highlighting.ipynb b/tests/python/highlighting.ipynb
index 1bccb69c5..28db29de6 100644
--- a/tests/python/highlighting.ipynb
+++ b/tests/python/highlighting.ipynb
@@ -240,7 +240,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b72ef90> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44f3f090> >"
       ]
      },
      "execution_count": 4,
@@ -352,7 +352,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.twa; proxy of <Swig Object of type 'std::shared_ptr< spot::twa > *' at 0x7f7d6b654870> >"
+       "<spot.twa; proxy of <Swig Object of type 'std::shared_ptr< spot::twa > *' at 0x7f6a44edacc0> >"
       ]
      },
      "execution_count": 5,
@@ -462,7 +462,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b72ef90> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44f3f090> >"
       ]
      },
      "execution_count": 6,
@@ -695,7 +695,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b6542a0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44eec0c0> >"
       ]
      },
      "execution_count": 8,
@@ -892,7 +892,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b6542a0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44eec0c0> >"
       ]
      },
      "execution_count": 11,
@@ -977,7 +977,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654ab0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7cb70> >"
       ]
      },
      "metadata": {},
@@ -1032,7 +1032,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654960> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7c8a0> >"
       ]
      },
      "metadata": {},
@@ -1126,7 +1126,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654990> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7c960> >"
       ]
      },
      "execution_count": 13,
@@ -1257,7 +1257,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654990> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7c960> >"
       ]
      },
      "metadata": {},
@@ -1322,7 +1322,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654ab0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7cb70> >"
       ]
      },
      "metadata": {},
@@ -1377,7 +1377,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654960> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7c8a0> >"
       ]
      },
      "metadata": {},
@@ -1609,7 +1609,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_product; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_product > *' at 0x7f7d6b654930> >"
+       "<spot.impl.twa_product; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_product > *' at 0x7f6a44e7cf00> >"
       ]
      },
      "metadata": {},
@@ -1694,7 +1694,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654ba0> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7cf60> >"
       ]
      },
      "metadata": {},
@@ -1791,7 +1791,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654a80> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7cdb0> >"
       ]
      },
      "metadata": {},
@@ -1959,7 +1959,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654d20> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7cea0> >"
       ]
      },
      "execution_count": 18,
@@ -2127,7 +2127,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654d20> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7cea0> >"
       ]
      },
      "execution_count": 19,
@@ -2290,7 +2290,7 @@
        "</svg>\n"
       ],
       "text/plain": [
-       "<spot.impl.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f7d6b654d20> >"
+       "<spot.twa_graph; proxy of <Swig Object of type 'std::shared_ptr< spot::twa_graph > *' at 0x7f6a44e7cea0> >"
       ]
      },
      "metadata": {},
@@ -2504,295 +2504,231 @@
     {
      "data": {
       "image/svg+xml": [
-       "<svg height=\"360pt\" viewBox=\"0.00 0.00 664.23 360.00\" width=\"664pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
-       "<g class=\"graph\" id=\"graph0\" transform=\"scale(.7243 .7243) rotate(0) translate(4 493)\">\n",
-       "<polygon fill=\"#ffffff\" points=\"-4,4 -4,-493 913,-493 913,4 -4,4\" stroke=\"transparent\"/>\n",
-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"433.5\" y=\"-474.8\">Inf(</text>\n",
-       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"455.5\" y=\"-474.8\">⓿</text>\n",
-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"471.5\" y=\"-474.8\">)</text>\n",
-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"431.5\" y=\"-460.8\">[Büchi]</text>\n",
+       "<svg height=\"329pt\" viewBox=\"0.00 0.00 734.00 328.98\" width=\"734pt\" xmlns=\"http://www.w3.org/2000/svg\" xmlns:xlink=\"http://www.w3.org/1999/xlink\">\n",
+       "<g class=\"graph\" id=\"graph0\" transform=\"scale(.8266 .8266) rotate(0) translate(4 394)\">\n",
+       "<polygon fill=\"#ffffff\" points=\"-4,4 -4,-394 884,-394 884,4 -4,4\" stroke=\"transparent\"/>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"419\" y=\"-375.8\">Inf(</text>\n",
+       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"441\" y=\"-375.8\">⓿</text>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"457\" y=\"-375.8\">)</text>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"417\" y=\"-361.8\">[Büchi]</text>\n",
        "<g class=\"cluster\" id=\"clust1\">\n",
        "<title>cluster_0</title>\n",
-       "<polygon fill=\"none\" points=\"318,-345 318,-445 370,-445 370,-345 318,-345\" stroke=\"#00ff00\"/>\n",
+       "<polygon fill=\"none\" points=\"543,-144 543,-346 872,-346 872,-144 543,-144\" stroke=\"#00ff00\"/>\n",
        "</g>\n",
        "<g class=\"cluster\" id=\"clust2\">\n",
        "<title>cluster_1</title>\n",
-       "<polygon fill=\"none\" points=\"164.5,-294 164.5,-394 216.5,-394 216.5,-294 164.5,-294\" stroke=\"#00ff00\"/>\n",
+       "<polygon fill=\"none\" points=\"464,-149 464,-201 516,-201 516,-149 464,-149\" stroke=\"#000000\"/>\n",
        "</g>\n",
        "<g class=\"cluster\" id=\"clust3\">\n",
        "<title>cluster_2</title>\n",
-       "<polygon fill=\"none\" points=\"663,-160 663,-392 901,-392 901,-160 663,-160\" stroke=\"#00ff00\"/>\n",
+       "<polygon fill=\"none\" points=\"139,-191 139,-306 403,-306 403,-191 139,-191\" stroke=\"#00ff00\"/>\n",
        "</g>\n",
        "<g class=\"cluster\" id=\"clust4\">\n",
        "<title>cluster_3</title>\n",
-       "<polygon fill=\"none\" points=\"559,-68 559,-120 611,-120 611,-68 559,-68\" stroke=\"#000000\"/>\n",
+       "<polygon fill=\"none\" points=\"139,-8 139,-108 191,-108 191,-8 139,-8\" stroke=\"#00ff00\"/>\n",
        "</g>\n",
        "<g class=\"cluster\" id=\"clust5\">\n",
        "<title>cluster_4</title>\n",
-       "<polygon fill=\"none\" points=\"164.5,-101 164.5,-216 498,-216 498,-101 164.5,-101\" stroke=\"#00ff00\"/>\n",
-       "</g>\n",
-       "<g class=\"cluster\" id=\"clust6\">\n",
-       "<title>cluster_5</title>\n",
-       "<polygon fill=\"none\" points=\"30,-248 30,-300 82,-300 82,-248 30,-248\" stroke=\"#000000\"/>\n",
+       "<polygon fill=\"none\" points=\"30,-102 30,-154 82,-154 82,-102 30,-102\" stroke=\"#000000\"/>\n",
        "</g>\n",
        "<!-- I -->\n",
        "<!-- 0 -->\n",
        "<g class=\"node\" id=\"node2\">\n",
        "<title>0</title>\n",
-       "<ellipse cx=\"56\" cy=\"-274\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#000000\"/>\n",
-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"56\" y=\"-270.3\">0</text>\n",
+       "<ellipse cx=\"56\" cy=\"-128\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#000000\"/>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"56\" y=\"-124.3\">0</text>\n",
        "</g>\n",
        "<!-- I&#45;&gt;0 -->\n",
        "<g class=\"edge\" id=\"edge1\">\n",
        "<title>I-&gt;0</title>\n",
-       "<path d=\"M1.1233,-274C4.178,-274 17.9448,-274 30.9241,-274\" fill=\"none\" stroke=\"#000000\"/>\n",
-       "<polygon fill=\"#000000\" points=\"37.9807,-274 30.9808,-277.1501 34.4807,-274 30.9807,-274.0001 30.9807,-274.0001 30.9807,-274.0001 34.4807,-274 30.9807,-270.8501 37.9807,-274 37.9807,-274\" stroke=\"#000000\"/>\n",
+       "<path d=\"M1.1233,-128C4.178,-128 17.9448,-128 30.9241,-128\" fill=\"none\" stroke=\"#000000\"/>\n",
+       "<polygon fill=\"#000000\" points=\"37.9807,-128 30.9808,-131.1501 34.4807,-128 30.9807,-128.0001 30.9807,-128.0001 30.9807,-128.0001 34.4807,-128 30.9807,-124.8501 37.9807,-128 37.9807,-128\" stroke=\"#000000\"/>\n",
        "</g>\n",
        "<!-- 1 -->\n",
-       "<g class=\"node\" id=\"node3\">\n",
+       "<g class=\"node\" id=\"node6\">\n",
        "<title>1</title>\n",
-       "<ellipse cx=\"344\" cy=\"-371\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#1f78b4\" stroke-width=\"2\"/>\n",
-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"344\" y=\"-367.3\">1</text>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"490\" y=\"-171.3\">1</text>\n",
        "</g>\n",
        "<!-- 0&#45;&gt;1 -->\n",
        "<g class=\"edge\" id=\"edge2\">\n",
        "<title>0-&gt;1</title>\n",
-       "<path d=\"M63.8824,-290.3811C78.7868,-319.1066 114.1788,-377.4637 164.5,-398 217.5667,-419.6567 285.8315,-396.9135 320.9146,-381.9272\" fill=\"none\" stroke=\"#000000\"/>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"172\" y=\"-409.8\">a &amp; !b</text>\n",
+       "<path d=\"M74.1292,-128C95.7601,-128 133.0191,-128 165,-128 165,-128 165,-128 377,-128 411.229,-128 447.1265,-146.6121 469.0379,-160.4116\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"230.5\" y=\"-131.8\">!a &amp; !b</text>\n",
        "</g>\n",
        "<!-- 2 -->\n",
-       "<g class=\"node\" id=\"node4\">\n",
+       "<g class=\"node\" id=\"node7\">\n",
        "<title>2</title>\n",
-       "<ellipse cx=\"190.5\" cy=\"-320\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#1f78b4\" stroke-width=\"2\"/>\n",
-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"190.5\" y=\"-316.3\">2</text>\n",
+       "<ellipse cx=\"165\" cy=\"-217\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#1f78b4\" stroke-width=\"2\"/>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"165\" y=\"-213.3\">2</text>\n",
        "</g>\n",
        "<!-- 0&#45;&gt;2 -->\n",
        "<g class=\"edge\" id=\"edge3\">\n",
        "<title>0-&gt;2</title>\n",
-       "<path d=\"M72.7754,-280.7513C78.8086,-283.1189 85.6835,-285.7478 92,-288 117.039,-296.9278 146.0092,-306.2165 166.019,-312.4716\" fill=\"none\" stroke=\"#000000\"/>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"106\" y=\"-311.8\">a &amp; b</text>\n",
+       "<path d=\"M70.2498,-139.6352C89.426,-155.2928 123.6231,-183.2152 145.2652,-200.8863\" fill=\"none\" stroke=\"#000000\"/>\n",
+       "<polygon fill=\"#000000\" points=\"150.7467,-205.3619 143.3322,-203.3746 148.0356,-203.1483 145.3245,-200.9347 145.3245,-200.9347 145.3245,-200.9347 148.0356,-203.1483 147.3168,-198.4947 150.7467,-205.3619 150.7467,-205.3619\" stroke=\"#000000\"/>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"92\" y=\"-188.8\">!a &amp; b</text>\n",
        "</g>\n",
        "<!-- 3 -->\n",
-       "<g class=\"node\" id=\"node7\">\n",
+       "<g class=\"node\" id=\"node9\">\n",
        "<title>3</title>\n",
-       "<ellipse cx=\"585\" cy=\"-94\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#000000\"/>\n",
-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"585\" y=\"-90.3\">3</text>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"165\" y=\"-30.3\">3</text>\n",
        "</g>\n",
        "<!-- 0&#45;&gt;3 -->\n",
        "<g class=\"edge\" id=\"edge4\">\n",
        "<title>0-&gt;3</title>\n",
-       "<path d=\"M60.5211,-256.4433C76.6018,-195.9686 133.1366,0 190.5,0 190.5,0 190.5,0 472,0 495.3255,0 542.9619,-47.9358 568.2929,-75.3444\" fill=\"none\" stroke=\"#000000\"/>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"323.5\" y=\"-3.8\">!a &amp; !b</text>\n",
+       "<path d=\"M69.8049,-116.0948C89.0516,-99.4968 124.0302,-69.3318 145.8063,-50.5524\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"107\" y=\"-97.8\">a</text>\n",
        "</g>\n",
        "<!-- 4 -->\n",
-       "<g class=\"node\" id=\"node8\">\n",
+       "<g class=\"node\" id=\"node3\">\n",
        "<title>4</title>\n",
-       "<ellipse cx=\"190.5\" cy=\"-135\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#ff4da0\" stroke-width=\"2\"/>\n",
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-       "<title>0-&gt;4</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"92\" y=\"-239.8\">!a &amp; b &amp; c</text>\n",
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-       "<!-- 5 -->\n",
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-       "<title>5</title>\n",
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-       "<!-- 0&#45;&gt;5 -->\n",
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-       "<title>0-&gt;5</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"227\" y=\"-268.8\">!a &amp; b &amp; !c</text>\n",
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-       "<!-- 1&#45;&gt;1 -->\n",
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-       "<title>1-&gt;1</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"339.5\" y=\"-425.8\">1</text>\n",
-       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"336\" y=\"-410.8\">⓿</text>\n",
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-       "<!-- 2&#45;&gt;1 -->\n",
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-       "<title>2-&gt;1</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"244.5\" y=\"-356.8\">a | !b</text>\n",
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-       "<!-- 2&#45;&gt;2 -->\n",
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-       "<title>2-&gt;2</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"172\" y=\"-374.8\">!a &amp; b</text>\n",
-       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"182.5\" y=\"-359.8\">⓿</text>\n",
+       "<ellipse cx=\"569\" cy=\"-234\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#ff4da0\" stroke-width=\"2\"/>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"569\" y=\"-230.3\">4</text>\n",
        "</g>\n",
        "<!-- 6 -->\n",
-       "<g class=\"node\" id=\"node5\">\n",
+       "<g class=\"node\" id=\"node4\">\n",
        "<title>6</title>\n",
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-       "<!-- 6&#45;&gt;6 -->\n",
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-       "<title>6-&gt;6</title>\n",
-       "<path d=\"M684.3583,-253.4099C683.4918,-263.0879 685.0391,-272 689,-272 691.9088,-272 693.5159,-267.1936 693.8213,-260.8073\" fill=\"none\" stroke=\"#000000\"/>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"670.5\" y=\"-275.8\">!b &amp; c</text>\n",
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-       "<!-- 6&#45;&gt;6 -->\n",
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-       "<title>6-&gt;6</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"672\" y=\"-308.8\">b &amp; c</text>\n",
-       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"681\" y=\"-293.8\">⓿</text>\n",
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-       "<!-- 7 -->\n",
-       "<g class=\"node\" id=\"node6\">\n",
-       "<title>7</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"875\" y=\"-182.3\">7</text>\n",
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-       "<!-- 6&#45;&gt;7 -->\n",
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-       "<title>6-&gt;7</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"779\" y=\"-203.8\">!b &amp; !c</text>\n",
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-       "<!-- 6&#45;&gt;7 -->\n",
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-       "<title>6-&gt;7</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"781\" y=\"-243.8\">b &amp; !c</text>\n",
-       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"791.5\" y=\"-228.8\">⓿</text>\n",
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-       "<!-- 7&#45;&gt;6 -->\n",
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-       "<title>7-&gt;6</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"781\" y=\"-284.8\">!b &amp; c</text>\n",
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-       "<!-- 7&#45;&gt;6 -->\n",
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-       "<title>7-&gt;6</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"782.5\" y=\"-310.8\">b &amp; c</text>\n",
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-       "<!-- 7&#45;&gt;7 -->\n",
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-       "<title>7-&gt;7</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"854.5\" y=\"-240.8\">!b &amp; !c</text>\n",
-       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"867\" y=\"-225.8\">⓿</text>\n",
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-       "<!-- 7&#45;&gt;7 -->\n",
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-       "<title>7-&gt;7</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"856.5\" y=\"-255.8\">b &amp; !c</text>\n",
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-       "<title>3-&gt;6</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"621\" y=\"-166.8\">a &amp; c</text>\n",
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-       "<!-- 3&#45;&gt;7 -->\n",
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-       "<title>3-&gt;7</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"725\" y=\"-96.8\">a &amp; !c</text>\n",
+       "<ellipse cx=\"695\" cy=\"-221\" fill=\"#ffffaa\" rx=\"18\" ry=\"18\" stroke=\"#ff4da0\" stroke-width=\"2\"/>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"695\" y=\"-217.3\">6</text>\n",
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        "<!-- 4&#45;&gt;6 -->\n",
-       "<g class=\"edge\" id=\"edge15\">\n",
+       "<g class=\"edge\" id=\"edge11\">\n",
        "<title>4-&gt;6</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"456\" y=\"-239.8\">a &amp; c</text>\n",
+       "<path d=\"M586.6825,-229.1951C597.3921,-226.5227 611.3779,-223.4509 624,-222 639.0867,-220.2658 656.0943,-219.969 669.6807,-220.1279\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"626.5\" y=\"-225.8\">!c</text>\n",
+       "</g>\n",
+       "<!-- 7 -->\n",
+       "<g class=\"node\" id=\"node5\">\n",
+       "<title>7</title>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"846\" y=\"-236.3\">7</text>\n",
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        "<!-- 4&#45;&gt;7 -->\n",
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-       "<title>4-&gt;7</title>\n",
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-       "<!-- 4&#45;&gt;3 -->\n",
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-       "<title>4-&gt;3</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"395\" y=\"-109.8\">!a &amp; !b</text>\n",
+       "<title>4-&gt;7</title>\n",
+       "<path d=\"M576.4064,-217.5184C586.186,-198.5557 605.339,-170 632,-170 632,-170 632,-170 770.5,-170 799.0099,-170 821.302,-197.1731 834.057,-217.6591\" fill=\"none\" stroke=\"#000000\"/>\n",
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-       "<!-- 4&#45;&gt;4 -->\n",
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-       "<title>4-&gt;4</title>\n",
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-       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"182.5\" y=\"-174.8\">⓿</text>\n",
+       "<!-- 6&#45;&gt;4 -->\n",
+       "<g class=\"edge\" id=\"edge16\">\n",
+       "<title>6-&gt;4</title>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"625.5\" y=\"-256.8\">!b</text>\n",
+       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"624\" y=\"-241.8\">⓿</text>\n",
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-       "<!-- 4&#45;&gt;5 -->\n",
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-       "<title>4-&gt;5</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"311\" y=\"-159.8\">!a &amp; b &amp; !c</text>\n",
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-       "<!-- 5&#45;&gt;6 -->\n",
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-       "<title>5-&gt;6</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"569\" y=\"-206.8\">a &amp; c</text>\n",
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-       "<!-- 5&#45;&gt;7 -->\n",
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-       "<title>5-&gt;7</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"671\" y=\"-172.8\">a &amp; !c</text>\n",
-       "</g>\n",
-       "<!-- 5&#45;&gt;3 -->\n",
+       "<!-- 6&#45;&gt;6 -->\n",
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-       "<title>5-&gt;3</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"508\" y=\"-118.8\">!a &amp; !b</text>\n",
+       "<title>6-&gt;6</title>\n",
+       "<path d=\"M688.6208,-238.0373C687.3189,-247.8579 689.4453,-257 695,-257 699.166,-257 701.4036,-251.8576 701.7128,-245.1433\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"676.5\" y=\"-260.8\">b &amp; !c</text>\n",
+       "</g>\n",
+       "<!-- 6&#45;&gt;7 -->\n",
+       "<g class=\"edge\" id=\"edge18\">\n",
+       "<title>6-&gt;7</title>\n",
+       "<path d=\"M713.1301,-221.5548C732.4942,-222.326 764.0424,-224.0965 791,-228 801.02,-229.4509 811.9369,-231.6926 821.384,-233.8474\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"753.5\" y=\"-231.8\">b &amp; c</text>\n",
+       "</g>\n",
+       "<!-- 7&#45;&gt;4 -->\n",
+       "<g class=\"edge\" id=\"edge19\">\n",
+       "<title>7-&gt;4</title>\n",
+       "<path d=\"M837.3792,-256.1151C825.3165,-276.2236 801.3706,-308 770.5,-308 632,-308 632,-308 632,-308 605.0884,-308 587.2554,-279.2741 577.6349,-257.6175\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"690.5\" y=\"-326.8\">b</text>\n",
+       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"687\" y=\"-311.8\">⓿</text>\n",
+       "</g>\n",
+       "<!-- 7&#45;&gt;6 -->\n",
+       "<g class=\"edge\" id=\"edge20\">\n",
+       "<title>7-&gt;6</title>\n",
+       "<path d=\"M828.1204,-242.8876C808.6992,-245.4858 776.8532,-248.1715 750,-243 739.0051,-240.8826 727.4143,-236.587 717.7231,-232.3489\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"750\" y=\"-248.8\">!b &amp; !c</text>\n",
+       "</g>\n",
+       "<!-- 7&#45;&gt;7 -->\n",
+       "<g class=\"edge\" id=\"edge21\">\n",
+       "<title>7-&gt;7</title>\n",
+       "<path d=\"M839.6208,-257.0373C838.3189,-266.8579 840.4453,-276 846,-276 850.166,-276 852.4036,-270.8576 852.7128,-264.1433\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"827.5\" y=\"-279.8\">!b &amp; c</text>\n",
+       "</g>\n",
+       "<!-- 1&#45;&gt;4 -->\n",
+       "<g class=\"edge\" id=\"edge5\">\n",
+       "<title>1-&gt;4</title>\n",
+       "<path d=\"M505.306,-185.3002C513.6004,-190.9762 523.9712,-198.2264 533,-205 538.4689,-209.1029 544.2844,-213.6864 549.6103,-217.9764\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"526\" y=\"-208.8\">a</text>\n",
+       "</g>\n",
+       "<!-- 2&#45;&gt;4 -->\n",
+       "<g class=\"edge\" id=\"edge8\">\n",
+       "<title>2-&gt;4</title>\n",
+       "<path d=\"M169.9131,-234.5127C179.7482,-265.3245 204.9605,-326 251,-326 251,-326 251,-326 490,-326 525.9049,-326 549.032,-285.1685 560.4711,-257.9093\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"373.5\" y=\"-329.8\">a</text>\n",
+       "</g>\n",
+       "<!-- 2&#45;&gt;1 -->\n",
+       "<g class=\"edge\" id=\"edge6\">\n",
+       "<title>2-&gt;1</title>\n",
+       "<path d=\"M182.9363,-214.6821C237.5383,-207.6258 401.836,-186.3935 464.9394,-178.2386\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"300\" y=\"-202.8\">!a &amp; !b</text>\n",
+       "</g>\n",
+       "<!-- 2&#45;&gt;2 -->\n",
+       "<g class=\"edge\" id=\"edge7\">\n",
+       "<title>2-&gt;2</title>\n",
+       "<path d=\"M158.6208,-234.0373C157.3189,-243.8579 159.4453,-253 165,-253 169.166,-253 171.4036,-247.8576 171.7128,-241.1433\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"132\" y=\"-256.8\">!a &amp; b &amp; !c</text>\n",
+       "</g>\n",
+       "<!-- 5 -->\n",
+       "<g class=\"node\" id=\"node8\">\n",
+       "<title>5</title>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"middle\" x=\"377\" y=\"-222.3\">5</text>\n",
+       "</g>\n",
+       "<!-- 2&#45;&gt;5 -->\n",
+       "<g class=\"edge\" id=\"edge9\">\n",
+       "<title>2-&gt;5</title>\n",
+       "<path d=\"M183.075,-217.7673C220.9374,-219.3747 308.6456,-223.0982 351.924,-224.9355\" fill=\"none\" stroke=\"#000000\"/>\n",
+       "<polygon fill=\"#000000\" points=\"358.9707,-225.2346 351.8434,-228.0848 355.4739,-225.0861 351.977,-224.9376 351.977,-224.9376 351.977,-224.9376 355.4739,-225.0861 352.1107,-221.7904 358.9707,-225.2346 358.9707,-225.2346\" stroke=\"#000000\"/>\n",
+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"220\" y=\"-224.8\">!a &amp; b &amp; c</text>\n",
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        "<!-- 5&#45;&gt;4 -->\n",
-       "<g class=\"edge\" id=\"edge18\">\n",
+       "<g class=\"edge\" id=\"edge15\">\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"313\" y=\"-176.8\">!a &amp; b &amp; c</text>\n",
+       "<path d=\"M395.0629,-226.7526C429.3694,-228.1821 504.0395,-231.2933 543.4547,-232.9356\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"486.5\" y=\"-234.8\">a</text>\n",
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-       "<!-- 5&#45;&gt;5 -->\n",
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-       "<title>5-&gt;5</title>\n",
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-       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"439\" y=\"-186.8\">!a &amp; b &amp; !c</text>\n",
+       "<!-- 5&#45;&gt;1 -->\n",
+       "<g class=\"edge\" id=\"edge13\">\n",
+       "<title>5-&gt;1</title>\n",
+       "<path d=\"M392.481,-216.2542C398.7338,-212.5082 406.0931,-208.3347 413,-205 430.3661,-196.6156 450.7234,-188.7653 466.1434,-183.1996\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"413\" y=\"-208.8\">!a &amp; !b</text>\n",
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+       "<!-- 5&#45;&gt;2 -->\n",
+       "<g class=\"edge\" id=\"edge14\">\n",
+       "<title>5-&gt;2</title>\n",
+       "<path d=\"M359.3975,-230.8141C330.1706,-238.0861 269.9042,-250.0143 220,-240 208.7869,-237.7499 197.0066,-233.157 187.2379,-228.6631\" fill=\"none\" stroke=\"#000000\"/>\n",
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+       "<text fill=\"#000000\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"232.5\" y=\"-261.8\">!a &amp; b</text>\n",
+       "<text fill=\"#1f78b4\" font-family=\"Lato\" font-size=\"14.00\" text-anchor=\"start\" x=\"243\" y=\"-246.8\">⓿</text>\n",
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+       "<!-- 3&#45;&gt;3 -->\n",
+       "<g class=\"edge\" id=\"edge10\">\n",
+       "<title>3-&gt;3</title>\n",
+       "<path d=\"M158.6208,-51.0373C157.3189,-60.8579 159.4453,-70 165,-70 169.166,-70 171.4036,-64.8576 171.7128,-58.1433\" fill=\"none\" stroke=\"#000000\"/>\n",
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