R2,C2,S2,B3,9,NN
A stable rule that has a variety of natural speeds as well as an (5, 8)c/18 puffer that can be corderised.
There is also a common P8 oscillator that looks like a shaker. In addition, there is a common still life that looks like a sideways 8. It is formed from a beehive predecessor.
Known Speeds
c/2d
2c/4o
c/6d
c/10d
3c/11o
(4, 5)c/16
(5, 8)c/18
2c/28d