2x4

(a)  

5x3

(a)  

6x2

(a)  

6x3

(a)  

4x5

(a)  

5x7

(a)  

5x6

(a)  

10x10

(a)  

7465x0

(a)  

9x10

(a)  

24x2

(a)  

5x2

(a)  

5x5

(a)  

7x2

(a)