logical structure of a file

5:07

1:27

19:36

55:49

19:36

3:32

29:58

1:34

4:53

1:47

3:51

4:30

4:30

4:29

2:54

4:26

7:42

4:13

14:20

8:02

8:55

6:52

6:53

7:19

4:31

4:30

6:19

2:42

17:41

6:41

11:16

23:03

1:37:35

7:39

6:30

5:41

39:00

3:48

8:19

3:47