3 4 5 6

12-18m 18-24m 2

2

12 18 20

10 16

4 8 10 14

2 3 5

6

3 4 5 6 7 8 10 12 14 18

10 12 14

3 4 6 7 10 14 18 20

12m

2 3 8 10

18-24m

7

10

8

3 12 14

5

6m 9m

3

14

5 14

6-9m 9-12m 12-18m 18-24m 2 3

6

2 6 10

8

2

12-18m 18-24m 2

6 10

8 10 12

9m

9m

8 9

7 12 14

3 6 7 8 10 12 14 20

6 7

9m 12m 18m 24m 2

6

1/2 2/3

6m 9m

6m

10

4 5 6 8

24m

2

10