! "main" (cells 25 length 16 width 5 generation 9)
! Smallest known period 3 c/3 spaceship.
! Dean Hickerson, August 1989
6k@!
..O
.O.O
.O.O
.O
.
OO
.O.O
O.O
OOO
.
.O.O
.OO
..O
..O.O
..O.O
...O