Small dispinosnub hexacosi prismatosnub pentishexacosichoron

The small dispinosnub hexacosi prismatosnub pentishexacosichoron, or sedansix paspox, is a nonconvex uniform polychoron that consists of 600 small stellated dodecahedra, 1200 icosahedra (some of which lie in the same hyperplanes, forming 600 snub disoctahedra), 4800 cubohemioctahedra (forming 2400 compounds of two), 1200 small icosicosidodecahedra (forming 600 compounds of two), 600 small rhombidodecahedra, and 3600 pentagrammic prisms.

One small stellated dodecahedron, two icosahedra (two compounds), eight cubohemioctahedra (eight compounds), ten small icosicosidodecahedra (ten compounds), five small rhombidodecahedra, and five pentagrammic prisms join at each vertex.

It can be obtained as the blend of 5 small dipentary prismatohecatonicosihexacosihecatonicosachora and 5 small dipentary hecatonicosihexacositrishecatonicosachora. In the process, some of the cubohemioctahedron cells blend out.

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