BSV1
8
0 0 0
2 0 0
2 2 0
0 2 0
0 0 2
2 0 2
2 2 2
0 2 2
3 1 2
0 1 3
7 5 4
7 6 5
7 3 2
2 6 7
1 4 5
4 1 0
2 1 5
6 2 5
7 4 0
3 7 0