#N Burloaferimeter
#O David Buckingham
#C A period 7 oscillator.
#C www.conwaylife.com/wiki/index.php?title=Burloaferimeter
x = 10, y = 11, rule = B3/S23
4b2o4b$5bo4b$4bo5b$3bob3o2b$3bobo2bob$2obo3bobo$2obo4bob$4b4o2b2$4b2o
4b$4b2o!