Octahemihexadecachoron

The octahemihexadecachoron, or oh, is a nonconvex uniform polychoron that consists of 8 regular octahedra and 8 octahemioctahedra. 2 octahedra and 4 octahemioctahedra join at each vertex.

Vertex coordinates
The vertices are the same as those of the regiment colonel, the regular icositetrachoron.