Great retrofrustary pentishecatonicosihexacosichoron

The great retrofrustary pentishecatonicosihexacosichoron, or girfophix, is a nonconvex uniform polychoron that consists of 120 dodecadodecahedra, 600 octahedra, 120 great rhombidodecahedra, 120 small rhombicosidodecahedra, 120 small ditrigonal dodecicosidodecahedra, and 120 quasitruncated dodecadodecahedra. One dodecadodecahedron, one octahedron, two great rhombidodecahedra, two small rhombicosidodecahedra, two small ditrigonal dodecicosidodecahedra, and four quasitruncated dodecadodecahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the antifrustary hexacositrishecatonicosachoron.