digraph example4det {
	rankdir="LR";
	node [texmode="math",shape="circle",style="state"];
	q0 [style="state,initial",label="\{0\}"];
	q01 [style="state",label="\{0,1\}"];
	q02 [style="state,final",label="\{0,2\}"];
	q012 [style="state,final",label="\{0,1,2\}"];
	edge [texmode="math",lblstyle="auto"];
	q0 -> q0 [label="b",topath="loop above"];
	q0 -> q01 [label="a"];
	q01 -> q012 [label="a"];
	q01 -> q02 [label="b"];
	q012 -> q012 [label="a",topath="loop above"];
	{ rank="same"; q012 -> q02 [label="b"]; }
	q02 -> q0 [label="a,b"];
}