1 6 13 22 ()
A.27 B.29
C.33 D.46
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:22,33,20,31,18,()A.28 B.29 C.30 D.27
1 6 13 22 () A.27 B.29 C.33 D.46
11,13,17,19,23,() A.27 B.29 C.31 D.33
4,6,5,7,7,9,11,13,19,21,(),() A.27,29 B.32,33 C.35,37 D.41,43
1,6,13,22,() A.27 B.29 C.33 D.46
13, 17, 21, 25, (), 33。A.27 B.29 C.31 D.32