11:03 34
student
11:03 
27:41 3
09:28 35
04:30 17
21:23 15
10:29 2
12:27
5
11:36 20
14:01 22
06:58 36
22:48 4
37:15 12
21:43 9
10:16 8
11:19 5
09:08 2
08:38
9
12:13 2
20:16 13
20:16 9