digraph example4det { rankdir="LR"; node [texmode="math",shape="circle",style="state"]; q0 [style="state,initial",label="0",texlbl="$\{0\}$"]; q01 [style="state",label="01",texlbl="$\{0,1\}$"]; q02 [style="state,final",label="02",texlbl="$\{0,2\}$"]; q012 [style="state,final",label="012",texlbl="$\{0,1,2\}$"]; 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"]; }