x = 460, y = 61, rule = B3678/S34678
251booboo$250b6o6bo29bo$249bob4obo3b5o26boboboo$248b8obb7o3bobob3o14bo
b6o6bo$247b23obo4bo11b8obo3b6o$247b23obo4bo10b10obb6obo63bobo18bo$248b
8obb7o3bobob3o11b20o22b4oboo35bobo11bobobo4boo$249bob4obo3b5o21b20o20b
3ob4obo5bobo10boo12b3ob3o10b3ob5obo8boo16bo$172bobo75b6o6bo24b10obb6ob
o18bob8o4b3obo4b3ob6o12b3o8boobob9o4boob6o14bo23bo$171b3o77booboo32b8o
bo3b6o17bob9obb8o3b10o12b3o7bob13obb11o10bobbobo15bobobo4boo$170b4o
115bob6o6bo20b19obob11o23b27o12b4o17b3ob5obo$71bo98bobobo62bo53boboboo
27bob9obb8o3b10o12b3o7bob13obb11o10bobbobo12boobob9o4boob3o$61bo9boo
98bobo27bo32bobobobo51bo32bob8o4b3obo4b3ob6o12b3o8boobob9o4boob6o14bo
12bob13obb8o$59b4o4bob4o97bo25bo4booboo21bo4boob5ob3o82b3ob4obo5bobo
10boo12b3ob3o10b3ob5obo8boo16bo12b24o$58b6o3bob3obo3b3obo88bo23bobob8o
6boobbo5boo3bo4b10obo84b4oboo35bobo11bobobo4boo40bob13obb8o$57b16obb4o
bboo87b4o19bobb9obo3b5obo4b3oboboo3b14o124bobo18bo44boobob9o4boob3o$
56b25o89bo21b14obb15oboobboo3b9oboo195b3ob5obo$56b25o110b27ob3o4b5obob
obb3o199bobobo4boo$57b16obb4obboo87b3o19b9obb7obbob4obb4obo3b3obb3o46b
oo161bo$58b6o3bob3obo3b3obo88boo21bob5obo3b5o3bob3obobobo4boobo50boo
17bo129bo$59b4o4bob4o99bo22b6o6bo9bobbo62bo17b3o127boo$61bo9boo97bo3bo
20boboboo17bo83bo127boo$71bo98boboo22bo$7boo161b4o$5boobo161b4o$6b4ob
oo10bo6bo$3bob8o6booboboo3boo104bo$bb10obo3b8obb6o101boo$b12obb18oboo
98b3o$32obboo33bo191b4o126b4o$b8ob8obb12obbo34b3o64b4o121b4o126b4o$bb
6o4b5obo3b5ob5o37bo64b4obboo118b4o126b4o$3b5o6bo9boobobo103b9obo$4bob
oo7boboo10b3o70boo28bob9o4boob3o3b3ob3o$29bo73bo27bob10obb8o4b6o$99bo
3bo3boo22b21obb8o$62boo34boob8o22bob10obb8o4b6o$61b4oboo29b11obo3boob
3o13bob9o4boob3o3b3ob3o$59bob7o28b13obb8o14b9obo52bo$58b9obo3booboo18b
26o14b4obboo52boboboo17bo83bo127boo$57b11obb6obo17b26o15b4o55b6o6bo9bo
bbo62bo17b3o127boo$56b23o17b13obb8o74bob5obo3b5o3bob3obobobo4boobo50b
oo17bo129bo$56b23o18b11obo3boob3o73b9obb7obbob4obb4obo3b3obb3o46boo
161bo$57b11obb6obo20boob8o82b27ob3o4b5obobobb3o199bobobo4boo$58b9obo3b
ooboo22bo3bo3boo83b14obb15oboobboo3b9oboo195b3ob5obo$59bob7o35bo89bobb
9obo3b5obo4b3oboboo3b14o124bobo18bo44boobob9o4boob3o$61b4oboo34boo90bo
bob8o6boobbo5boo3bo4b10obo84b4oboo35bobo11bobobo4boo40bob13obb8o$62boo
132bo4booboo21bo4boob5ob3o82b3ob4obo5bobo10boo12b3ob3o10b3ob5obo8boo
16bo12b24o$201bo32bobobobo51bo32bob8o4b3obo4b3ob6o12b3o8boobob9o4boob
6o14bo12bob13obb8o$237bo53boboboo27bob9obb8o3b10o12b3o7bob13obb11o10bo
bbobo12boobob9o4boob3o$289bob6o6bo20b19obob11o23b27o12b4o17b3ob5obo$
251booboo32b8obo3b6o17bob9obb8o3b10o12b3o7bob13obb11o10bobbobo15bobobo
4boo$250b6o6bo24b10obb6obo18bob8o4b3obo4b3ob6o12b3o8boobob9o4boob6o14b
o23bo$249bob4obo3b5o21b20o20b3ob4obo5bobo10boo12b3ob3o10b3ob5obo8boo
16bo$248b8obb7o3bobob3o11b20o22b4oboo35bobo11bobobo4boo$247b23obo4bo
10b10obb6obo63bobo18bo$247b23obo4bo11b8obo3b6o$248b8obb7o3bobob3o14bob
6o6bo$249bob4obo3b5o26boboboo$250b6o6bo29bo$251booboo!
A pseudo-period 260 backwards period 32 ship rake.
The period of the puffer is actually 520, but the output is period 260.
This uses a p16 puffer whose output is turned into a p4 oscillator,   
which is then hit by the smoke from two large spaceships to create
the period 32 spaceship.
David I. Bell, May 1997
