#C Puffer train #C This was created simply by perturbing the sides of a B-heptomino #C with two LWSS's. A B-heptomino is a naturally occurring object, #C a precursor to the Herschel pattern, which lurches forward at the #C speed c/2 before its own debris usually destroys it. #C -- Not in this case! The LWSS escorts keep the B-heptomino alive. #C From Alan Hensel's "lifebc" pattern collection. x = 5, y = 18, rule = B3/S23 3bo$4bo$o3bo$b4o4$o$boo$bbo$bbo$bo3$3bo$4bo$o3bo$b4o!