41:54
0
student
31:24
7
21:10
5
08:12
2
16:04
4
08:23
11
09:14
4
23:08
6
10:45
14
19:55
14
08:12
8
28:41
5
05:05
13
06:05
11
09:03
8
07:15
11
04:11
14
13:04
10
06:20
16
02:32
10