29:45
1
teacher
03:16
0
10:00
0
07:57
0
21:25
0
08:05
2
11:22
2
22:41
3
11:05
4
14:40
6
15:54
9
12:05
19
26:17
12
15:29
17
11:12
11
22:52
36
12:36
9
37:49
5
05:40
8
27:39
7