27:00
2
teacher
25:00
21
25:00
2
24:00
5
15:00
0
14:00
0
08:00
0
08:00
1
08:00
1
08:00
1
08:00
0
08:00
0
08:00
7
08:00
0
07:00
0
06:00
0
06:00 27
06:00
0
06:00
0
05:00
0