00:50
11
student
05:00
32
12:55
17
16:00
10
12:00
6
25:19
8
05:03
2
13:07
6
10:34
19
11:18
8
22:00
12
05:00
6
13:00
9
04:00
59
12:00
15
08:59
16
16:56
6
03:34 9
07:52
5
08:11
17
07:28
10
17:16
4
16:00
3
15:44
4
04:39
4
15:10
8
05:54
3
12:00
29
12:00 8