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4 0 0 0 0 0 0 0 0
0 0 0 0 0 3 3 0 0
0 0 0 4 0 0 0 0 4
0 0 2 0 0 0 3 0 0
4 0 0 0 0 3 0 0 0
0 0 3 5 0 0 0 0 0
0 0 0 0 0 0 0 0 2
0 3 0 0 0 0 6 0 0