ConwayLife.com

This 4-state automaton emulates two independent life worlds:

@RULE DoubleLife

@TABLE
n_states:4
neighborhood:Moore
symmetries:permute

var a=1
var b=2
var *=3
var aon={a,*}
var bon={b,*}
var aoff={0,b}
var boff={0,a}
var any={0,a,b,*}

var c=aon
var d=c
var e=d
var f=e
var g=f
var h=g

var i=bon ...