#N Pressure cooker
#C A period 3 oscillator found by the MIT group in September 1971.
#C www.conwaylife.com/wiki/index.php?title=Pressure_cooker
x = 11, y = 12, rule = B3/S23
5bo5b$4bobo4b$4bobo4b$3b2ob2o3b$obo5bobo$2obobobob2o$3bo3bo3b$3bo3bo3b
$4b3o4b2$3bob2o4b$3b2obo!