922
6
21
885
0
21
1141
8
21
445
7
21
692
2
21
704
2
21
601
0
21
714
0
21
879
1
21
986
0
21
968
0
21
445
3
20
667
2
20
660
0
20
417
0
20
830
2
20
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Keyword(s): lesson7