Great rhombiprismic disoctachoron

The great rhombiprismic disoctachoron, or girpdo, is a nonconvex uniform polychoron that consists of 8 great rhombihexahedra, 8 quasitruncated cuboctahedra, and 32 hexagonal prisms. One great rhombihexahedron, two quasitruncated cuboctahedra, and two hexagonal prisms join at each vertex.

It can be constructed as a blend of four quasitruncated cuboctahedral prisms. In the process, their cube cells blend out and their octagrammic prism cells blend into great rhombihexahedra.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the great cubihexadecadisoctachoron.