Small invertifrustary dishexacositetrishecatonicosachoron

The small invertifrustary dishexacositetrishecatonicosachoron, or sifduxthi, is a nonconvex uniform polychoron that consists of 120 dodecadodecahedra, 600 octahedra, 120 quasirhombicosidodecahedra, 120 small dodecicosahedra, 120 small dodecicosidodecahedra, and 600 truncated octahedra. One dodecadodecahedron, one octahedron, two quasirhombicosidodecahedra, two small dodecicosahedra, two small dodecicosidodecahedra, and four truncated octahedra join at each vertex.

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