43:59
teacher
08:00
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40:25
10:47
41:47
02:12
02:02:31
09:00
23:02
10:46
23:35
34:12
12:42
13:00
20:59
01:26:52
01:45:55
01:32:56
14:35
27:02
09:39
16:03
11:54
10:21
12:53
06:46
05:04
30:54
11:11
42:13
06:53
12:55
32:06
12:22
44:02