12:16 0
student
12:16 
30:04 4
00:05 0
00:07 1
00:17
0
17:43 60
00:38 1
00:51 3
09:33 66
09:33 33
00:13 2
10:00
0
00:05 1
12:05
68
06:43
4
00:05 2
24:47 0
00:49 1
06:56
1
06:35
2
