1th generation
O.......OO
.O......OO
..O.......
...O......
...OO.....
..OOOO....
.OOOOOO...
OOOOOOOO..
........O.
.........O

2th generation
........OO
.O......OO
..O.......
..OOO.....
.....O....
.O....O...
O......O..
O......O..
.OOOOOOOO.
..........

3th generation
........OO
........OO
.OO.......
..OOO.....
..OOOO....
......O...
OO....OO..
O.OOOO....
.OOOOOOOO.
..OOOOOO..

4th generation
........OO
........OO
.OO.......
.....O....
..O..O....
.OOOO.OO..
OOOOO.OO..
O.......O.
........O.
.O......O.

5th generation
........OO
........OO
..........
.OO.......
.OO..O....
O......O..
O...O.O.O.
O.OO....O.
.......OOO
..........