ref: f9a61a0813fa1eb4ca026373f9b421cc3aeae040
dir: /sys/games/lib/life/c5/
..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x xxxxx.xxxxx.xxxxx.xxxxx.xxxxx ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x ..............x