879
2
21
832
6
21
1042
0
21
623
1
21
928
5
21
702
2
21
767
0
21
1079
0
21
756
0
21
474
1
21
884
0
21
879
0
21
393
7
21
643
2
21
625
2
21
503
0
21
664
0
21
654
1
21
834
0
21
672
0
21
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Keyword(s): lesson4