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#2
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![]() R1...6-12-4-8-3
R2...9-1-4-7-5 R3...5-4-1-2-3 R4...2-6-5-1-8 R5...5-7-1-2-9 R6...2-6-10-12-13 R7...3-9-10-4-1 R8...8-7-6-4-1 R9...4-6-12-7-3 |