Teacher and student(part)3

3
2
12:46
01:18:15
33:31
43:47
16:31
18:12
20:41
05:48
11:59
20:44
31:12
23:52
15:14
17:07
17:52
01:16:38
08:40
23:16
06:15
10:48
15:00
07:59
27:40
15:29
32:29
12:50
26:27
15:00
23:50
13:32
23:21
19:22
21:32
05:14
56:10
35:21
19:43
18:20
29:55
22:23