968
8
21
393
7
21
626
2
21
644
2
21
506
0
21
664
0
21
736
1
21
835
0
21
879
0
21
885
0
21
661
1
21
599
2
20
376
3
20
364
0
20
584
0
20
748
2
20
713
0
20
1131
2
20
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Keyword(s): lesson7