.X........XX.....XX..XX.....XX..XX......XX..X....X...XX.....XX..XXX...XXX..XX..XX..XX..X....X...XX.....XX..XXXX.XXXX..XX..XX..XX..X....X...XXXXXXXXX..XX.XXX.XX..XX..XX..XX..XXXXXXX..XX.....XX..XX.....XX..XX..XX..XX.......X...XX.....XX..XX.....XX..XX..XX..XX.......X...XX.....XX..XX.....XX...XXX..XXX..