ref: d8bcd6c8e4a31a407aebcc3e60cdf3630b0b3c5f
dir: /sys/games/lib/life/barberpole/
xx........... x.x.......... ............. ..x.x........ ............. ....x.x...... ............. ......x.x.... ............. ........x.x.. ............. ..........x.x ...........xx