08:00
1
teacher
37:00
1
05:00
3
28:00
7
24:00
0
05:00
2
07:00
6
42:00
9
13:00
2
10:00
4
05:00
6
06:00
7
14:00
8
05:00
4
08:00
9
05:00
6
05:00
7
44:00
14