    0   0       0   0        0   0       0   0      0   0
    0   0       2   2        5   5       2   2      0   0
    0   0       5   5       10  10       5   5      0   0
    0   0       2   2        5   5       2   2      0   0
    0   0       0   0        0   0       0   0      0   0
