#N Boss
#O David Buckingham
#C A period 4 oscillator.
#C www.conwaylife.com/wiki/index.php?title=Boss
x = 11, y = 14, rule = B3/S23
5bo5b$4bobo4b$4bobo4b$3b2ob2o3b$2bo5bo2b$bobobobobob$bobo3bobob$2obo3b
ob2o$o2bobobo2bo$2bo5bo2b$3b2ob2o3b$4bobo4b$4bobo4b$5bo!