# Directed graph: graphviz/sample_ngraph1.txt 
# Nodes: 30 Edges: 40
# FromNodeId	ToNodeId
0	7
0	14
2	28
3	26
5	15
5	16
5	22
7	21
7	27
8	2
8	24
8	27
11	8
12	26
13	18
15	8
15	9
15	22
16	4
16	12
16	20
16	27
17	8
18	4
18	23
19	20
20	19
20	21
21	11
21	27
22	19
22	25
23	10
23	20
24	23
24	28
25	6
25	18
26	24
29	11
