05:00 0
teacher
05:00 10:03
0
10:04
0
10:26
0
05:14 0
08:11
0
08:00
1
06:00
3
00:29
1
06:00
2
40:00
0
03:00
3
11:00
0
06:00
4
00:39
3
06:00
4
36:00
4
11:00
2
05:00
1
08:00
3
06:00
2
26:00
0
01:29
2
02:00
2
01:35
2
08:00
2
09:00
2
28:00
1
04:00
3
05:00
2
18:00
2
06:00
2
01:23
1
10:00
3
01:24
2