x = 20, y = 13, rule = B36/S23
bb3o$5bo$obo3bo$o6bo$o7bo$bo6bo$bbo3bobo$3bo12b3o$4b3o12bo$19bo$10bo8b
o$10bo$10bo!
A period 96 sideways rake.
This is composed of a bomber and a replicator which react together.
Many other objects can be constructed using similar reactions.
The period can be increased by a factor of 2^N by moving the replicator
farther in front of the bomber.
Dean Hickerson, 1994