Small retroinverted dodecahedronary hexacosihecatonicosachoron

The small retroinverted dodecahedronary hexacosihecatonicosachoron, or sridixhi, is a nonconvex uniform polychoron that consists of 120 great ditrigonary icosidodecahedra and 600 tetrahedra. Twenty great ditrigonary icosidodecahedra and twenty tetrahedra join at each vertex.

It also has great icosahedra as pseudofacets.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the small ditrigonary hexacosihecatonicosachoron.