问题
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1, 1, 8, 16, 7, 21, 4, 16, 2, () A.10;B.20;C.30
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7,4,14,8,21,16,(),()A.20,18B.28,32C.20,32D.28,64
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7,4,14,8,21,16,(),() A.20,18B.28,32C.20,32D.28,64
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7, 4, 14, 8, 21, 16,______,______ () A.20,18 B.28,32 C.20,32 D.28,64
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7,8,9,10,12,14,16,20,21,28,() A.35 B.32 C.28 D.27
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7, 4, 14, 8, 21, 16, (), () A.20, 18 B.28, 32 C.20,32 D.28, 64