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