x = 21, y = 11, rule = B3678/S34678
3bo$b4oboobo3b3obboo$oboobb5ob8o$3o3b15o$oobbobb14o$3bobb14o$oobbobb
14o$3o3b15o$oboobb5ob8o$b4oboobo3b3obboo$3bo!
A period 8 wickstretcher leaving a stable wick.
David I. Bell, May 1997
