693
2
21
609
0
21
707
2
21
447
7
21
542
1
21
1161
0
21
796
0
21
976
0
21
886
1
21
988
0
21
791
0
21
940
1
21
720
2
21
512
0
21
781
2
21
749
0
21
904
0
21
951
2
21
690
1
21
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Keyword(s): lesson2