digraph CFG {
  node [fontname="Helvetica"];
  n1026 [label="START", shape=box];
  n1026 -> n1028;
  n1028 [label="True", shape=box];
  n1028 -> n1029;
  n1029 [label="<?>", shape=diamond];
  n1029 -> n1031 [label="T"];
  n1031 [label="3", shape=box];
  n1031 -> n1026;
}