#C A period 200 rocket gun.
#C This uses a small "engine" and two period 8 spark oscillators.
#C The engine emits a rocket whose exhaust (along with the period 8 sparks)
#C perturbs the engine back to its original state.  This is the smallest
#C known gun mechanism in Day & Night.
#C David I. Bell, July 1999
x = 18, y = 33, rule = B3678/S34678
3b12o$b16o$b16o$18o$oob12oboo8$4bo$oobobobo$8o$b9o$9o$b9o$8o$oobobobo$
4bo8$oob12oboo$18o$b16o$b16o$3b12o!
