digraph unsignedInt { 

// pattern [label=""];
n0[label="grammars: W2 W2 D8 2E PER 1E"];
n1[ label="seq"];
n0 -> n1;
n2[ label="0-1"];
n1 -> n2;
n3[ label="charClass"];
n2 -> n3;
n4[ label="any_of"];
n3 -> n4;
n5[ label="SCE: -"];
n4 -> n5;
n6[ label="'+'"];
n4 -> n6;
n7[ label="1-*"];
n1 -> n7;
n8[ label="[0-9]"];
n7 -> n8;
 }