05:02 0
classroom
05:02 
06:01 1
06:51 0
08:28
0
08:28 0
05:05 4
05:07 2
05:15 8
06:00 4
07:24 4
08:03 2
08:28 2
14:00 5
20:27 3
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10:40
1
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38:56 2