00:25
1
teacher
05:00
1
06:00
0
07:00
0
11:00
2
10:00
1
05:00
2
05:00
0
05:00
3
08:00
1
25:00
4
05:00
2
05:00
3
05:00
2
10:00
4
05:00
0
06:00
1
07:00
2
08:00
2
09:00
3