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-6 -7 7 -6 7 8 -8 7 -7 -6 6 6 7 7 -8 9 -9 8 -6 -6 -9 8 -8 -6 -8 -8 7 -8 8 -8 7 -7 -6 -6 -6 -10 9 -9 -6 -9 -9 8 -9 9 -9 8 -8 -10