1086
2
18
559
4
18
981
0
17
719
2
17
1858
0
17
530
2
16
760
0
15
569
1
15
714
0
15
687
2
15
1358
0
14
1144
4
14
884
0
14
1036
0
14
441
4
13
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Keyword(s): #math m.3