379
0
20
443
7
20
798
0
20
645
1
20
617
0
20
471
0
20
609
2
20
991
24
19
1129
2
19
893
4
19
398
0
19
430
4
18
467
2
18
401
0
18
522
3
17
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Keyword(s): lesson7