0 3
0 1
0 1 4
0 3 2
1 0
1 4
1 0 3
1 4 2
2 4
2 3
2 3 0
2 4 1
3 0
3 2
3 0 1
3 2 4
4 1
4 2
4 2 3
4 1 0
