Small skewverted prismatohecatonicosidishecatonicosachoron

The small skewverted prismatohecatonicosidishecatonicosachoron, or sik viphidy, is a nonconvex uniform polychoron that consists of 120 great dodecicosahedra, 120 small rhombidodecahedra, 720 decagrammic prisms, and 120 great rhombicosidodecahedra. One great dodecicosahedron, one small rhombidodecahedron, two decagrammic prisms, and two great rhombicosidodecahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small skewverted ditrigonal prismatohexacosidishecatonicosachoron.