8 x 6

(a)  

7 x 6

(a)  

8 x 9

(a)  

3 x 6

(a)  

254 x 2

(a)  

125 x 5

(a)  

25 x 21

(a)  

25 x 3

(a)  

12 x 4

(a)  

16 x 2

(a)  

15 x 5

(a)  

24 x 3

(a)  

43 x 6

(a)  

36 x 4

(a)  

17 x 8

(a)  

28 x 8

(a)  

27 x 6

(a)  

12 x 5

(a)  

34 x 3

(a)