digraph test { 
n0;
n1;
n2[ color=green ];
n3[ fontcolor=red ];
n0 -> n1[ label= "X"];
n1 -> n0[ label= "eps", fontcolor=red];
n1 -> n3[ label= "eps", fontcolor=red];
n2 -> n3[ label= "eps", fontcolor=red];
n2 -> n0[ label= "eps", fontcolor=red];
}
