digraph {graph[r=R l="l "c=p t=t][l=""]graph[p=""b=""]b{graph[l=0c=m	p=""b=""][s=""h=""t=""][s=""h=""t=""]a->b[s="8    "]}b{graph[l=1p=""b=""][s=""h=""t=""][s=""h=""t=""]c->d[s="8    "]}}