digraph flow2 {
#	1 -> 2 [label=14];
	1 -> 4 [label=6];
	2 -> 3 [label=4];
	2 -> 4 [label=9];
#	3 -> 5 [label=12];
#	3 -> 8 [label=18];
	4 -> 5 [label=12];
#	5 -> 2 [label=11];
	5 -> 6 [label=16];
#	5 -> 7 [label=4];
#	6 -> 7 [label=7];
	6 -> 8 [label=6];
	7 -> 9 [label=4];
#	8 -> 9 [label=20];
}