879
2
21
874
2
21
1165
0
21
491
0
21
635
0
21
929
2
21
1265
0
21
879
0
21
960
8
21
832
6
21
1042
0
21
623
1
21
928
5
21
1075
0
21
461
0
21
689
0
21
835
1
21
643
2
21
654
1
21
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Keyword(s): lesson3