Small hecatonicosihecatonicosihecatonicosachoron

The small hecatonicosihecatonicosihecatonicosachoron, or shiyay, is a nonconvex uniform polychoron that consists of 120 small dodecicosahedra, 120 quasitruncated dodecadodecahedra, and 120 great quasitruncated icosidodecahedra. One small dodecicosahedron, two quasitruncated dodecadodecahedra, and two great quasitruncated icosidodecahedra join at each vertex.

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