chapter 11 exercise 112

10:50

7:26

39:23

21:43

1:24:01

1:24

48:41

1:55

1:04:57

4:33

1:44:14

43:40

4:35

20:32

13:11

2:59

53:50

33:28

8:20

3:22

22:16

5:43

5:33

1:08:09

1:25:30

12:31

6:39

1:37:24

1:10:45

10:01

1:38:06

1:35:20

10:14

12:34

33:51

24:02

12:02

26:54

47:32

13:03

17:21

1:24:02

6:51

3:01

13:08

7:36

2:45

4:29

3:13

9:32

2:59

33:07

7:26

7:43

4:29

5:43

1:31:05

9:15

6:37

2:15