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#6
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R1: 6 2 3 4
R2: 4 2 6 3 R3: 5 2 4 1 R4: 6 1 2 5 R5: 7 8 4 1 R6: 2 7 9 3 R7: 5 7 3 1 R8: 7 6 2 4 R9: 7 2 8 1 |