#C A period 36 c/3 puffer.
#C This leaves four blocks each period.  The back of the puffer consists
#C of two different period 3 c/3 spaceships which perturb the engine's
#C exhaust.  (The engine self-destructs without the perturbations.)
#C Either of the back spaceships can be removed and replaced with a
#C symmetrical copy of the remaining spaceship to form a different puffer.
#C David I. Bell, March 1998
x = 136, y = 68
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3boo4bobbo22bobbo4boo3boboo5bo3bo3bo$20bo16boboboo3bobboobboo12boobboo
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