       3      0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0
       2      0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0
       1      0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0    0
