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