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1 0 8 0 0 0 0 0 7
2 7 0 0 0 0 0 0 6
3 0 0 0 0 7 0 0 4
4 0 0 0 0 0 6 0 5
5 0 0 5 0 0 0 0 3
6 0 0 3 0 5 0 0 2
7 0 0 0 0 0 0 3 1
8 0 0 0 0 0 0 0 8