11:12
9
student
15:35
30
06:45
11
01:10
8
06:13
3
06:18
36
47:52
19
22:06
22
05:25
4
08:05
21
18:25
6
02:55
8
12:13
21
41:54
17
31:24
22
21:10
25
08:12
9
16:04
29
08:23
19
09:14
21