R2,B3,8,10-12,S1-2,10,G0-1-1-3,NN

A very active rule with a common glide-symmetric 8c/28o that moves from right to left to right.

Catagolue census

Known Periods
8
12
20

Known Speeds
c/4d
2c/8d
4c/16d
8c/28o