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digraph G {
rankdir=LR;
node [shape=rectangle style=rounded color="#9e242e" width=0.5];
edge [color="#2eccc1"];
subgraph cluster_a {
color="#000066";
a1 [label="a"];
a2 [label="a"];
}
subgraph cluster_b {
color="#000066";
b1 [label="b"];
b2 [label="b"];
}
subgraph cluster_d {
color="#000066";
d1 [label="d"];
d2 [label="d"];
}
subgraph cluster_e {
color="#000066";
e1 [label="e"];
e2 [label="e"];
}
c1 [label="c"];
a1->b1;
b1->c1;
c1->d1;
d1->e1;
x2 [label="x"];
a2->b2;
b2->x2;
x2->d2;
d2->e2;
}
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