1-1 1-2 1-3 1-4
1-5 1-6 1-7 2-1
2-2 2-3 2-4 2-5
2-6 3-1 3-2 3-3
3-4 3-5 4-1 4-2
4-3 4-4 4-5 5-1
5-2 5-3 5-4