AT.dot

digraph G {
ordering=out

  0 [label = <AT>];
  0 -> 01;
  0 -> 02;
  01 [label = <AT>];
  01 -> 011;
  01 -> 012;
  011 [label = <NUM>];
  012 [label = <NUM>];
  02 [label = <NUM>];

}