1
8 8
 4 0 0 0 0 0 2 0
 0 4 -2 0 -2 2 0 2
 0 -2 4 2 0 0 0 -2
 0 0 2 4 0 0 2 -2
 0 -2 0 0 4 -2 2 -2
 0 2 0 0 -2 4 0 0
 2 0 0 2 2 0 4 -2
 0 2 -2 -2 -2 0 -2 4
