5 5
....X
XX..X
.X...
..X..
.X..X
4 3
4 3
4 2
4 0
0 0
2 0
2 2
2 3
2 4
0 1
0 2
0 3
1 2
1 3
3 0
3 1
3 3
3 3
3 4