The structure is arranged based on 11 dimensions of space and time which is composed of 12 loops woven into the spin networks.
Our Milky Way Galaxy is surrounded by the two (2) nearest Dark Matter Galaxies W-2 and W+2 with two joint gravity waveguides W+1 and W-1 and our Galaxy acquires the corresponding joint gravity potential.
So now we can find them as i12 in our discussions about the 26 parameters on the mechanism for fermion mass generation which end up to 139 components.
The visible W-1 (antimatter), W+1 (antimatter) Universes are adjacent to the W0 (our matter)-Universe and have two joint framing membranes M0 and M-1, carrying two joint electrostatic potentials. (Gribov_I_2013 - pdf)