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