// A network
digraph {
	1 [label=Alpha]
	2 [label=Beta]
	3 [label=Gamma]
	4 [label=Delta]
	5 [label=Epsilon]
	6 [label=Zeta]
	1 -> 5 [label=0.1]
	1 -> 6 [label=0.9]
	2 -> 1 [label=0.3]
	2 -> 3 [label=0.4]
	2 -> 4 [label=0.3]
	3 -> 4 [label=0.6]
	3 -> 5 [label=0.4]
	4 -> 5 [label=1.0]
	5 -> 1 [label=0.2]
	5 -> 6 [label=0.8]
	6 -> 4 [label=1.0]
}