317
2
20
550
0
20
447
0
20
397
0
20
571
2
20
682
13
20
625
1
20
371
0
19
655
0
19
501
2
19
529
0
19
244
2
19
340
3
18
410
0
18
354
2
18
626
4
18
401
4
18
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Keyword(s): lesson2