digraph graphname 
{
	splines=ortho;
	1 [ width=1, height=1, shape=rect ];
	2 [ width=1, height=1, shape=rect ];
	3 [ width=3, height=3, shape=rect ];
	4 [ width=1, height=1, shape=rect ];
	5 [ width=1, height=1, shape=rect ];
	1 -> 2[arrowhead=none, headport=n, tailport=s];
	1 -> 3[arrowhead=none, headport=n, tailport=s];
	1 -> 4[arrowhead=none, headport=n, tailport=s];
	2 -> 4[arrowhead=none, headport=n, tailport=s];
	2 -> 5[arrowhead=none, headport=n, tailport=s];
	3 -> 4[arrowhead=none, headport=n, tailport=s];
	3 -> 5[arrowhead=none, headport=n, tailport=s];
	4 -> 5[arrowhead=none, headport=n, tailport=s];
}
