#N Griddle and boat
#C A period 2 oscillator.
#C http://www.conwaylife.com/wiki/index.php?title=Griddle_and_boat
x = 6, y = 8, rule = B3/S23
3bo2b$bobo2b$o4bo$6o2$2b2o2b$bobo2b$2bo!