blog/content/images/mergesort-2.dot

graph G {
  top[label="", shape=circle];
  left1[label="sort [2,3,1,1]", shape=rectangle];
  right1[label="sort [10,0,14,4]", shape=rectangle];
  {rank=same; left1, right1}
  top -- left1;
  top -- right1;
}