BSV3
4
4
0 0 0
-3 0 0
-6 0 0
-9 0 0
5 0 0
5 0 0
5 0 0
5 0 0
3 3 0
3 3 -3
3 3 -6
3 3 -9
1.5 1.5 3
1.5 1.5 6
1.5 1.5 10
1.5 1.5 12
3 0 1
3 1 2
3 2 0
1 0 2