examples of marginal function

8:47

28:03

15:04

9:59

6:09

7:22

5:38

13:10

6:21

10:55

8:10

22:01

20:14

کوتاه

51:48

10:35

5:20

5:14

4:25

10:53

1:16

2:30

کوتاه

40:50

29:52

29:12

2:59

16:29

29:12

13:11

5:30

21:45

1:20:06

43:11

5:59

4:06

10:05

1:32:06

14:09

1:51