#N 2x2 line puffer
#O Nathaniel Johnston
#C The first known pattern to exhibit infinite growth in 2x2.
#C www.conwaylife.com/wiki/index.php?title=2x2
x = 5, y = 9, rule = b36/s125
4bo$3bob$2bo2b2$o4b$o2bob$obo2b2$2bo!