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A.1 B.2
C.3 D.4
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C.943 D.993
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A.2 B.4
C.6 D.8
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A.32 B.47
C.48 D.49
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A.7 B.7.5
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18.˻տƿij̵e"4VȪˮƿQһƿVȪˮ"Ļijм15VȪˮƿôԓӺ߀ʣ£ ƿ
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A.559650 B.573240
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A.33 B.42
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