/*********************
 * binary_tree.dot
 * To create binary_tree.png :
 *   $ dot -Tpng binary_tree.dot > binary
 *********************/

graph binarytree {
  a -- b;
  a -- c;
  b -- d;
  b -- e;
  c -- f;
  c -- zzz;
  f -- g;
  f -- h;

  zzz [shape=none, label=""];
}