Small ditetrahedronary cubiprismatohecatonicosachoron

The small ditetrahedronary cubiprismatohecatonicosachoron, or sidtacphi, is a nonconvex uniform polychoron that consists of 600 cubes, 120 dodecahedra, and 720 pentagonal prisms. Eight cubes, four dodecahedra, and twelve pentagonal prisms join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small ditetrahedronary hexacosihecatonicosachoron.