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6 lines
209 B

#N Cross
#O Robert Wainwright
#C A period 3 oscillator found in October 1989.
#C www.conwaylife.com/wiki/index.php?title=Cross
x = 8, y = 8, rule = B3/S23
2b4o2b$2bo2bo2b$3o2b3o$o6bo$o6bo$3o2b3o$2bo2bo2b$2b4o!