5x1

(a)  

7x1

(a)  

1x8

(a)  

1x6

(a)  

10x1

(a)  

1x9

(a)  

3x1

(a)  

1x2

(a)  

1x1

(a)  

8x1

(a)  

1x7

(a)  

1x5

(a)  

6x1

(a)  

1x1

(a)  

1x10

(a)  

9x1

(a)  

4x1

(a)  

2x1

(a)  

1x3

(a)  

8x1

(a)  

1x10

(a)  

9x1

(a)  

8x1

(a)  

5x1

(a)  

3x1

(a)  

4x1

(a)  

1x5

(a)  

9x1

(a)  

6x1

(a)