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#7
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R1. 4 7 2 6
R2. 4 2 3 7 R3. 8 2 7 3 R4. 1 4 9 15 R5. 5 1 2 4 R6. 10 9 3 4 R7. 3 6 2 7 R8. 9 5 1 3 R9. 4 5 2 1 |