digraph foogrph {
  node [shape = record,height=.1];
  node8[label = "<left> |<center> 8|<right> "];
  "node8":left -> "node5":center;
  node5[label = "<left> |<center> 5|<right> "];
  "node5":left -> "node4":center;
  node4[label = "<left> |<center> 4|<right> "];
  "node5":right -> "node6":center;
  node6[label = "<left> |<center> 6|<right> "];
  "node8":right -> "node9":center;
  node9[label = "<left> |<center> 9|<right> "];
}