05:19
8
student
05:19 
02:15
0
05:00
0
07:17
4
00:34
0
00:52
0
02:40
0
00:33
3
00:59
4
00:48
0
01:47
2
01:06
0
00:36
0
00:34
0
01:34
0
02:22
1
03:46
1
02:00
0
01:28
0
01:24
0
02:44
4
03:08
1
01:24
1
01:41
6
02:36
6
03:39
3
02:43
0
01:18
2
01:47
2
01:05
0