Small spinotoroidoditrigonary dishecatonicosachoron

The small spinotoroidoditrigonary dishecatonicosachoron, or sontaditdy, is a nonconvex uniform polychoron that consists of 120 small dodecicosahedra and 120 great dodecicosahedra. Six of each join at each vertex.

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