Small snubretrosnub prismatosnub hexishexacosichoron

The small snubretrosnub prismatosnub hexishexacosichoron, or sosirspashox, is a nonconvex uniform polychoron that consists of 1200 great icosahedra (some of which lie in the same hyperplanes, 600 small retrosnub disoctahedra), 600 great dodecahedra, 2400 octahemioctahedra and 2400 cuboctahedra (forming 2400 compounds of one of each), 600 cubohemioctahedra (forming 120 great antirhombicosahedra), 1200 small ditrigonal dodecicosidodecahedra (forming 600 compounds of two), 600 icosidodecadodecahedra, and 3600 pentagrammic prisms.

Two great icosahedra (two compounds), one great dodecahedron, four octahemioctahedra and four cuboctahedra (eight compounds), one cubohemioctahedron (one compound), ten small ditrigonal dodecicosidodecahedra (ten compounds), five icosidodecadodecahedra, and five pentagrammic prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary hexacosiprismatodishecatonicosachora and 5 small dipentary trishecatonicosihecatonicosihexacosichora. In the process, some of the octahemioctahedron and cuboctahedron cells blend out.

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