x = 38, y = 29, rule = B3678/S34678
4booboo$3b6o6bo13bob4o$bbob4obo3b5o5bo3boobo4bobo$b8obb7o3b4o3b9o$38o$
b37o$bb36o$3bob33o$5b33o$6b32o$5b33o$3bob33o$bb14obb20o$b14obobb19o$
15o8b15o$b14obobb19o$bb14obb20o$3bob33o$5b33o$6b32o$5b33o$3bob33o$bb
36o$b37o$38o$b8obb7o3b4o3b9o$bbob4obo3b5o5bo3boobo4bobo$3b6o6bo13bob4o
$4booboo!
A period 20 wickstretcher which contains an embedded period 40 spaceship.
The tail of the wickstretcher emits a period 40 spaceship at one point.
David I. Bell, April 1997