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nan nan nan nan nan nan nan nan nan nan 14 14 14 14 13 13 14 15 16 16 16 16 16 16 16 16 15 15 15 14 13 13 13 13 13 13 13 13 14 14 14 14 14 14 15 15 17 19 20 21 21 21 20 19 19 19 18 18 18 18 18 18 18 17 17 17 17 17 17 17 18 18 18 18 18 nan nan nan nan nan nan nan 19 19 18 18 18 18 18 17 17 16 16 17 18 19 20 21 21 21 20 20 19 18 18 18 18 19 19 19 20 20 20 20 20 20 21 21 21 nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan nan 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