10 New Uniform Polyexa

[Mecejide]

The compound of two rocs (rectified 7-simplices) in opposite orientations can actually blend with 11 members of the naq (3_21 polytope) regiment, including naq itself, to produce uniform polyexa.
Edit: I just realized that one of the polyexa that the rocs can blend with is itself a compound.
Edit 2: I'm no longer sure about that. There could be 10 or 11.
Edit 3: there are indeed only 10.