#N 29P9
#O Dean Hickerson
#C The smallest known period 9 oscillator
#C www.conwaylife.com/wiki/index.php?title=29P9
x = 10, y = 10, rule = b3/s23
b2o7b$2bo7b$2bob2o4b$b2obobo3b$7bo2b$5b3o2b$2o6b2o$o2bob2obob$2b2obo2b
ob$6b2o!