3    17     8     8
  0  1  0  0  0  0  0  0
 16  0  0  0  0  0  0  0
  0  0  0  1  0  0  0  0
  0  0 16  0  0  0  0  0
  0  0  0  0  0  1  0  0
  0  0  0  0 16  0  0  0
  3  9  1  9  5  8 16  2
  6  3  5  4 15 10 16  1