Small ditetrahedronary hexacosidishecatonicosachoron

The small ditetrahedronary hexacosidishecatonicosachoron, or sidtaxady, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra, 120 regular dodecahedra, and 120 great ditrigonary icosidodecahedra. 4 dodecahedra, 4 tetrahedra, and 4 great ditrigonary icosidodecahedra join at each vertex.

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