Small retrofrustary hexacositetrishecatonicosachoron

The small retrofrustary hexacositetrishecatonicosachoron, or sirfxuthi, is a nonconvex uniform polychoron that consists of 120 great icosicosidodecahedra, 120 great rhombidodecahedra, 120 small dodecicosidodecahedra, 120 quasitruncated dodecadodecahedra, and 600 truncated octahedra. Two great icosicosidodecahedra, two great rhombidodecahedra, two small dodecicosidodecahedra, four quasitruncated dodecadodecahedra, and four truncated octahedra join at each vertex.

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