          -1          -1           0           1           1
          -1           1           1           0          -1
          11  1
          -1           0           0           1           0      0
          -1           0           0           0           0      0
          -1           0           1           0           0      0
          -1           0           0           1           1      0
          -1           0           0           0           1      0
          -1           0           1           1           0      0
          -2           0           0           1           1      0
           0           0           0           0           0      0
          -1           1           1           0           0      0
          -1           0           1           1           1      0
          -1           1           1           1           0      0
 ctable
           0           0           6           0           4           0           0           0           2           0
           8           7           3           1           5           0           0           0           0           0
           0           9           0           6           0           0           0           2           0           0
          11           0          10           0           0           7           8           0           5           1
           9           0           0           4           0           0           0           0           0           2
           0          11           0           0          10           8           0           1           3           0
           4           0           9           0           0           0           2           0           0           0
           6           4           0           0           9           2           0           0           0           0
          10           0           0          11           0           5           3           7           0           8
           0           0           0           0           0           9           0           4           0           6
           0           0           0           0           0           4           6           0           9           0
