1 X 1 1 X 2 1 X 3 1 X 4 1 X 5 1 X 6 1 X 7 1 X 8 1 X 9
2 X 1 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 1 3 X 2 3 X 3 3 X 4 3 X 5 3 X 6 3 X 7 3 X 8 3 X 9
4 X 1 4 X 2 4 X 3 4 X 4 4 X 5 4 X 6 4 X 7 4 X 8 4 X 9
5 X 1 5 X 2 5 X 3 5 X 4 5 X 5 5 X 6 5 X 7 5 X 8 5 X 9
6 X 1 6 X 2 6 X 3 6 X 4 6 X 5 6 X 6 6 X 7 6 X 8 6 X 9
7 X 1 7 X 2 7 X 3 7 X 4 7 X 5 7 X 6 7 X 7 7 X 8 7 X 9
8 X 1 8 X 2 8 X 3 8 X 4 8 X 5 8 X 6 8 X 7 8 X 8 8 X 9
9 X 1 9 X 2 9 X 3 9 X 4 9 X 5 9 X 6 9 X 7 9 X 8 9 X 9