Small retrofrustary pentishecatonicosachoron

The small retrofrustary pentishecatonicosachoron, or sirfophi, is a nonconvex uniform polychoron that consists of 120 great icosicosidodecahedra, 120 great dodecicosidodecahedra, 120 small icosicosidodecahedra, 120 small dodecicosidodecahedra, and 120 quasitruncated dodecadodecahedra. Two great icosicosidodecahedra, two great dodecicosidodecahedra, two small icosicosidodecahedra, two small dodecicosidodecahedra, and four quasitruncated dodecadodecahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the antifrustary hexacositrishecatonicosachoron.