26:00
students
08:00
06:39
03:05
44:00
10:00
01:28
01:58:21
11:00
16:43
05:31
06:07
07:58
21:05
26:22
01:00
10:00
18:00
01:00:00
02:08:00
08:00
10:00
03:00
05:00
29:00
06:39
11:00
01:04:00
10:00
31:00
05:00
03:00
07:30
08:00
01:57
26:00
02:00
10:54
06:00
20:00
02:35
06:00
02:21:00
12:00
34:27