leipers model

6:40

16:28

26:57

10:39

9:04

16:22

13:33

31:27

00:45

14:04

1:18

1:15

00:16

5:33

11:03

4:14

00:19

8:14

53:21

1:01

00:59

6:42

4:36

18:29

8:07

7:07

1:03

27:27

4:13

7:43

3:40

2:20

4:42

21:09

00:43

00:50

21:02

00:12

1:33

15:17

1:11

2:37

3:29

00:11

5:43

21:33

5:36

7:53

3:33

1:56

5:09

2:42

4:38

1:01

4:12

4:32

2:06

4:49

5:22

1:17