1 to 3

4 to 6

7

1&2

1

3 to 5

2

6 to 8

3

8

9&10

4

11 to 13

5

14 to 16

6

17 to 20

7

9

21 & 22

8

23 to 25

9

26 to 28

10

29 to 31