#N Boat on spark coil
#C A period 2 oscillator.
#C www.conwaylife.com/wiki/index.php?title=Boat_on_spark_coil
x = 8, y = 11, rule = B3/S23
2ob2o3b$o3bo3b$b3o4b3$b3o4b$o3bo3b$2ob2o3b$5b2ob$5bobo$6bo!