Adjacency list:
0 -> 1,3,
1 -> 2,
2 -> 
3 -> 2,
4 -> 
5 -> 6,7,
6 -> 3,7,
7 -> 
8 -> 7,
Edge list:
Source: 0,Target: 1 (Id: 1)
Source: 0,Target: 3 (Id: 0)
Source: 1,Target: 2 (Id: 2)
Source: 3,Target: 2 (Id: 3)
Source: 5,Target: 6 (Id: 5)
Source: 5,Target: 7 (Id: 4)
Source: 6,Target: 3 (Id: 7)
Source: 6,Target: 7 (Id: 6)
Source: 8,Target: 7 (Id: 8)

Topological sort: 
socks,undershorts,pants,shoes,watch,shirt,belt,tie,jacket,
