06:09 2
student
06:09 
08:04 2
06:05 3
06:05 3
06:03 0
08:07 1
06:41 1
09:03
0
12:09 4
02:00
1
10:00
2
05:26
1
05:01 1
06:02
1
06:00 0
28:00
1
06:00
1
06:09 2
12:00 1
05:00
2
