x = 133, y = 19, rule = B3678/S34678
125boobboo$123b3oboob3o$123b4obb4o$125boobboo3$34boo78boo$34bo79bo$29b
oo3bo3bo70boo3bo3bo$18boo9b8oboo58boo9b8oboo$boo13b6oboo3bob11o40boo
13b6oboo3bob11o$b3o4bo7b11obb13o39b3o4bo7b11obb13o$ob5o10b26o37bob5o
10b26o$b3o4bo7b11obb13o39b3o4bo7b11obb13o$boo13b6oboo3bob11o40boo13b6o
boo3bob11o$18boo9b8oboo58boo9b8oboo$29boo3bo3bo70boo3bo3bo$34bo79bo$
34boo78boo!

A small period 8 oscillator which can double the period of a rocket stream.
Every even numbered rocket is perturbed to leave behind a large eater which
cleanly destroys the following odd numbered rocket.  One or more of these
reactions can be added to any rocket gun whose period is a multiple of eight
to multiply its period by a power of two.
David I. Bell, December 1999
