Small retroditetrahedronary distrishecatonicosachoron

The small retroditetrahedronary distrishecatonicosachoron, or sirdatady, is a nonconvex uniform polychoron that consists of 120 great ditrigonary icosidodecahedra and 120 icosidodecahedra. Four great ditrigonary icosidodecahedra and six icosidodecahedra join at each vertex.

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