Double Ants Dock

Double Ants reversible cellular automaton (CA). "Dock" is some "hybrid" of ["Anthill"](https://skfb.ly/I6MQ) and ["Framework"](https://skfb.ly/IovS) originated from 2x2x2 block with 2x2x1 blue and red parts (after 64 steps of evolution). A "multiped" and a few small "gnats" are moving near the "dock". The 3D CA has some similarity with 2D CA mentioned in a post ["Digital Zoo"](https://ayvlasov.wordpress.com/2014/04/08/digital-zoo/). **More:** ["Multiped" in action](https://skfb.ly/I8z8), config