14 6

 1 -1  0  1 -1  0
 0  1 -1  0  1 -1
 2  0  0  0  0  0
 0  2  0  0  0  0
 0  0  2  0  0  0
 0  0  0  2  0  0
 0  0  0  0  2  0
 0  0  0  0  0  2
-2  0  0  0  0  0
 0 -2  0  0  0  0
 0  0 -2  0  0  0
 0  0  0 -2  0  0
 0  0  0  0 -2  0
 0  0  0  0  0 -2

0
0
2
2
2
2
2
2
0
0
0
0
0
0