Small ditetrahedronary hecatonicosihexacosihecatonicosachoron

The small ditetrahedronary hecatonicosihexacosihecatonicosachoron, or sadthixhi, is a nonconvex uniform polychoron that consists of 600 tetrahedra, 120 dodecahedra, and 120 small dodecicosidodecahedra. Four tetrahedra, four dodecahedra, and twelve small dodecicosidodecahedra join at each vertex.

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