2x7=

(a)  

3x4=

(a)  

3x6=

(a)  

4x5=

(a)  

4x7=

(a)  

4x8=

(a)  

4x9=

(a)  

5x6=

(a)  

5x7=

(a)  

5x8=

(a)  

6x6=

(a)  

6x7=

(a)  

6x8=

(a)  

6x9=

(a)  

7x4=

(a)  

7x7=

(a)  

7x9=

(a)  

8x8=

(a)  

8x9=

(a)  

9x9=

(a)