#N Middleweight emulator
#O Robert Wainwright
#C A period 4 oscillator that produces sparks similar to those of the 
#C middleweight spaceship.
#C www.conwaylife.com/wiki/index.php?title=Middleweight_emulator
x = 15, y = 7, rule = B3/S23
7bo7b$2b2obo3bob2o2b$2bo9bo2b$3b2o5b2o3b$3o2b5o2b3o$o2bo7bo2bo$b2o9b2o
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