x = 35, y = 12, rule = B3678/S34678
5bo$4boboboo20bo$4b6o6bo9boobobo$bbob5obo3b6o4b8obo$b9obb7o3b13o$34o$
33obo$b14obb10ob5obo$bbobb9obo3b8obbobo$3bobob8o6booboo$5bo4booboo10bo
$10bo!
A period 1100 puffer which creates a trail of small oscillators.
David I. Bell, May 1997