2 x 2
2 x 3
2 x 4
2 x 5
2 x 6
2 x 7
2 x 8
2 x 9
3 x 3
3 x 5
3 x 7
3 x 8
3 x 9
4 x 5
4 x 7
4 x 8
4 x 9
5 x 5
5 x 6
5 x 7
5 x 8
5 x 9
6 x 7
6 x 8
6 x 9
7 x 7
7 x 8
7 x 9
8 x 8
8 x 9
9 x 9
9 x 10
8 x 10
7 x 10
6 x 10
5 x 10
