digraph CFG {
  node [fontname="Helvetica"];
  n849 [label="True", shape=box];
  n849 -> n850;
  n850 [label="<?>", shape=diamond];
  n850 -> n854 [label="T"];
  n854 [label="1", shape=box];
  n850 -> n855 [label="F"];
  n855 [label="0", shape=box];
}