0   0       0   0        0   0        0   0       0   0       0   0
0   0       2   2        5   5        5   5       2   2       0   0
0   0       5   5        7   7        7   7       5   5       0   0
0   0       5   5        7   7        7   7       5   5       0   0
0   0       2   2        5   5        5   5       2   2       0   0
0   0       0   0        0   0        0   0       0   0       0   0
