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#7
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![]() r3: 9 1 5
r4: 2 6 7 r5: 12 7 6 r6: 7 6 13 r7: 9 8 4 r8: 11 5 2 r9: 4 8 5 r10: 11 1 8 r11: 5 6 12 r12: 7 12 9 |