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1/8,1/6, 9/22,27/40,() A.27/16 B.27/14 C.8
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1,6,13,() A.22;B.21;C.20;D.19;
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11,13,17,19,23,() A.27 B.29 C.31 D.33
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1 6 13 22 () A.27 B.29 C.33 D.46
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1,6,13,22,() A.27 B.29 C.33 D.46
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13, 17, 21, 25, (), 33。A.27 B.29 C.31 D.32
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13,17,21, 25,(),33。A.27 B.29 C.31 D.32