reverse teaching

3:01

2:51

5:02

5:04

6:46

4:18

8:55

2:25

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4:03

3:21

7:08

6:01

12:11

17:05

2:51

4:22

18:10

10:43

3:46

1:43

3:27

2:57

4:39

2:49

2:39

3:41

4:24

13:33

22:21

56:38

2:19

9:48

4:30

4:30

4:43

7:51

4:37

7:09

2:16

5:58

30:25

47:57

54:29

8:27

3:50

3:31

2:39

14:50

3:01

3:51

3:28

5:53

2:33

7:36

4:32

26:51

9:18

22:20

7:18