cube
8 6
1 -10 -10 10
2 10 -10 10
3 10 10 10
4 -10 10 10
5 -10 -10 -10
6 10 -10 -10
7 10 10 -10
8 -10 10 -10
gray 4 1 2 6 5 
gray 4 2 3 7 6  
gray 4 3 4 8 7 
gray 4 4 1 5 8 
gray 4 4 3 2 1
gray 4 5 6 7 8