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