Replicators: B01468/S02

B01468/S02 has a small 9c/20 replicator:

B01468/S02 9c/20 replicator

Replicators can cancel each other around corners, forming large square replicator-based oscillators.

B01468/S02 p40
replicator-based oscillator

From random initial conditions, this rule develops a chaotic patchword of small regions of live and dead cells.

Replicators -- Cellular Automata -- D. Eppstein -- UCI Inf. & Comp. Sci.