ref: 4628d9418db7932f3bbbad2c8007a021d3885a3a
dir: /sys/games/lib/life/barberpole/
xx........... x.x.......... ............. ..x.x........ ............. ....x.x...... ............. ......x.x.... ............. ........x.x.. ............. ..........x.x ...........xx