x = 2745, y = 105
151bo5bo2429bo5bo$151bo5bo2429bo5bo$151boo3boo2429boo3boo$$147b3obboob
oobb3o2421b3obbooboobb3o$$122boo5boo5boo5boo6boo3boo6boo5boo5boo5boo
2371boo5boo5boo5boo6boo3boo6boo5boo5boo5boo$120bo3bo3bobbo3bobbo3bo3bo
3bobo3bobo3bo3bo3bobbo3bobbo3bo3bo2367bo3bo3bobbo3bobbo3bo3bo4bo5bo4bo
3bo3bobbo3bobbo3bo3bo$120bo3bobob3o5b3obobo3bo6bobo6bo3bobob3o5b3obobo
3bo2367bo3bobob3o5b3obobo3bo4bo5bo4bo3bobob3o5b3obobo3bo$120bo5boobb3o
b3obboo5bo3bobbobobbo3bo5boobb3ob3obboo5bo2367bo5boobb3ob3obboo5bo15bo
5boobb3ob3obboo5bo$120boob3o15b3oboo3bobbobobbo3boob3o15b3oboo2367boob
3o15b3oboo15boob3o15b3oboo$120bo25bo4boo3boo4bo25bo2367bo25bo15bo25bo$
121bo3bo15bo3bo17bo3bo15bo3bo2369bo3bo15bo3bo17bo3bo15bo3bo$122bobbo
15bobbo7bo11bobbo15bobbo2371bobbo15bobbo19bobbo15bobbo$151boo$151bobo
$$120bo5boo5boo5bo2463bo5boo5boo5bo$118bobbooboobbo3bobbooboobbo2459bo
bbooboobbo3bobbooboobbo$116b3o4bobo3bobo3bobo4b3o2455b3o4bobo3bobo3bob
o4b3o$116boobbobb3oboo3boob3obbobboo2455boobbobb3oboo3boob3obbobboo$
116b3obb3o4bo3bo4b3obb3o2455b3obb3o4bo3bo4b3obb3o$117bobobbo15bobbobo
2457bobobbo15bobbobo$118bo23bo2459bo23bo69$31bo5bo2669bo5bo$31bo5bo
2669bo5bo$30bobo3bobo2667bobo3bobo$31bo5bo2669bo5bo$31bo5bo2669bo5bo$
9bo7bo33bo7bo2625bo7bo33bo7bo$3booboboboo3booboboboo7bo5bo7booboboboo
3booboboboo2613booboboboo3booboboboo21booboboboo3booboboboo$3obob3o9b
3obob3o4bo5bo4b3obob3o9b3obob3o2607b3obob3o9b3obob3o15b3obob3o9b3obob
3o$o3bobo5bobo5bobo3bobboobo3boboobbo3bobo5bobo5bobo3bo2607bo3bobo5bob
o5bobo3bo15bo3bobo5bobo5bobo3bo$4boo6bobo6boo8bo5bo8boo6bobo6boo2615b
oo6bobo6boo23boo6bobo6boo$boo9bobo9boo5bo5bo5boo9bobo9boo2609boo9bobo
9boo17boo9bobo9boo$booboo15booboo17booboo15booboo2609booboo15booboo17b
ooboo15booboo$5bo15bo25bo15bo2617bo15bo25bo15bo!

A dirty period 23790 c/5 puffer.
This is one of an infinite series of puffers.  This uses a glider to
create a dirty reaction which produces an output glider which is then
reflected back again to re-ignite the reaction.  The re-ignition
releases another glider which is then used to do the same thing to
the second half.  If you move the two glider reflector ships at the edges
upwards by 15 cells and outwards by 75 cells and separate the left
and right halves of the puffer by 600 cells then this results in a puffer
whose period has been increased by 6000 generations.
David I. Bell, May 1998
