OFF
12 8 0

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