30:00
1
Teacher
02:00
0
02:24:00
0
19:00
0
06:00
2
06:00
1
31:00
2
07:00
2
15:00
5
04:00 0
17:00
8
05:00
1
06:00
0
33:00
3
02:00
2
06:00
2
08:00
2
21:00
0
06:00
2
05:00
2