16:49
18
teacher
16:10
7
19:57
6
18:43
5
12:42
2
06:00
3
07:59
3
09:59
1
02:14:00
21
12:06
1
24:26
2
40:20
10
09:35
2
12:00
0
10:00
0
12:21
4
12:47
5
00:56
1
23:28
4
13:27
7
11:00
1
05:02
4
06:00
1
06:18
4
14:15
6
15:15
6
00:58
9
06:00
2
19:19
8
23:00
10
01:27:00
3
31:35
4
12:18
0
19:00
5
04:57
4
04:00
3
06:00
3
06:04
6
27:44
5
39:26
1