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#9
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![]() R1: 1 7 8 9
R2: 3 10 11 12 R3: 7 8 9 10 R4: 11 9 10 12 R5: 8 10 11 12 R6: 2 6 7 8 R7: 3 5 6 7 R8: 7 5 6 8 R9: 12 9 10 11 R10: 3 10 11 12 R11: 12 9 10 11 |