问题
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81,64,121,36()16 A.144 B.169 C.196 D.225
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81,64,121,36,(),16 A.144 B.169 C.196 D.225
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81,64,121,36,(),16 A.144 B.169 C.196 D.25
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16,8.25,27.36,64.49,()A.65.25B.125.64C.125.81D.125.01
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27,16,25,36,23,64,21,()A.81 B.100 C.121 D.19
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4 27 16 25 36 23 64 21 ()A.81 B.100 C.121 D.144