digraph example7m { rankdir="LR"; node [texmode="math",shape="circle",style="state"]; q0 [style="state,initial",label="0"]; q23 [style="state",label="2|3",texlbl="$2\equiv 3$"]; q1 [style="state",label="1"]; q45 [style="state,final",label="4|5",texlbl="$4\equiv 5$"]; edge [texmode="math",lblstyle="auto"]; q0 -> q0 [label="b",topath="loop above"]; q23 -> q23 [label="a,c",topath="loop above"]; q45 -> q45 [label="a,b,c",topath="loop above"]; q1 -> q1 [label="b",topath="loop below"]; q0 -> q1 [label="c"]; q0 -> q23 [label="a"]; q1 -> q23 [label="a,c"]; q23 -> q45 [label="b"]; }