2 12
1 0
1 0
1 0
1 0
1 0
1 2 12
0 2 4
3 2 3
2 12
0 4 6
3 4 5
2 12
0 6 8
3 6 7
2 12
0 8 10
3 8 9
2 12
0 10 12
3 10 11
2 12
1 0 12
4
