exercise 72 example 6

1:21

3:10

9:26

2:43:50

44:52

7:38

15:30

56:47

10:51

10:37

4:58

14:55

7:18

1:38

5:08

8:45

7:53

10:59

1:04:35

8:21

17:11

10:55

7:19

4:59:28

31:44

59:12

1:30:15

7:10

7:43

29:51

9:04

1:11:03

46:42

11:12

8:25

17:49

8:01

5:56

4:35

3:17

6:00

6:56

7:52

3:28

4:31

2:05

20:04

1:36:26

4:57

11:36

17:26

11:56

6:34

12:46

2:57

1:31

1:14

10:16

1:56

1:52