ref: db002e51ebc2c56065c46dc40a9f8930b750aa6a
dir: /sys/games/lib/life/billiard5/
.........xx.. ........x.x.. ..xx....x.... ...x..xx.x... ...x.x...x... xx.x.x.x.x.xx xx.x.x.x.x.xx ...x.....x... xx.x....xx.xx xx.x..x..x.xx ...x.x.x.x... ...x..xx.x... ..xx....x.... ........x.x.. .........xx..