00:05 1
student
00:05 12:05
14
06:43
4
00:05 2
24:47 0
00:49 1
06:56
1
06:35
2
15:24
1
06:00
2
06:37
3
06:30
0
00:02 3
02:00
0
05:00
1
10:11 1
12:18
1
01:33
2
12:00
4
10:46 4
