18 - 13

(a)  

16 - 11

(a)  

12 - 6

(a)  

17 - 4

(a)  

19 - 7

(a)  

14 - 4

(a)  

17 - 5

(a)  

20 - 14

(a)  

19 - 11

(a)  

15 - 10

(a)  

17 - 6

(a)  

12 - 8

(a)  

20 - 7

(a)  

14 - 5

(a)  

19 - 16

(a)  

17 - 14

(a)  

18 - 8

(a)  

15 - 4

(a)  

12 - 7

(a)  

10 - 3

(a)  

16 - 3

(a)