 3  0  0  0  0  9  4  2  2  5  0  0  1  0  7
 0  0  0  0  9  0  2  4  0  0  0  0  0  9  1
 7 10  9  0  0  1  0  2  8  5 10  0  0  0  2
 0  0  1 10  1  0  4  2  0  0  0 10  9  1  0
