589
2
21
927
4
20
1021
0
20
674
3
20
687
0
20
435
2
20
898
2
20
409
0
20
3356
0
20
531
0
19
559
0
19
443
0
19
401
0
19
668
0
19
842
1
19
692
0
19
560
3
19
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Keyword(s): 数学 復習