  7  9  4  0 16  7  0  6  0  0  6  0
  8  0  2 15  0  0 15  0  0 10  0  0
  1  7 10  1  0  9  1  0 16  6  0 16
  0  0  0  0  0  0  0 10  0  0 10  0
