Retroinvertifrustary pentishecatonicosidishexacosichoron

The retroinvertifrustary pentishecatonicosidishexacosichoron, or rifophiddix, is a nonconvex uniform polychoron that consists of 120 dodecadodecahedra, 600 octahedra, 120 great dodecicosahedra, 120 small rhombicosidodecahedra, 120 small ditrigonal dodecicosidodecahedra, 120 quasitruncated dodecadodecahedra, and 600 truncated octahedra. One dodecadodecahedron, one octahedron, two great dodecicosahedra, two small rhombicosidodecahedra, two small ditrigonal dodecicosidodecahedra, four quasitruncated dodecadodecahedra, and four truncated octahedra join at each vertex.

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