1digraph huffman {
2  node [fontname="DejaVuSans"];
3  edge [fontname="DejaVuSans"];
4  margin = "0";
5  rankdir = "LR";
6
7  start [shape=circle,label="start"];
8  start -> n0 [label="0"];
9  start -> n1 [label="1"];
10  n0 [shape=circle,label=""];
11  n0 -> n00 [label="0"];
12  n0 -> n01 [label="1"];
13  n00 [shape=circle,label=""];
14  n00 -> n000 [label="0"];
15  n00 -> n001 [label="1"];
16  n000 [shape=record,label="{1|1}"];
17  n001 [shape=record,label="{0|1}"];
18  n01 [shape=record,label="{1|0}"];
19  n1 [shape=record,label="{0|0}"];
20}
21