Small tritrigonary hexacositrishecatonicosachoron

The small tritrigonary hexacositrishecatonicosachoron, or stut xethi, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra, 120 truncated dodecahedra, 120 small dodecicosidodecahedra, and 120 great ditrigonary icosidodecahedra. 1 tetrahedron, 3 truncated dodecahedra, 3 small dodecicosidodecahedra, and 1 great ditrigonary icosidodecahedron join at each vertex.

It is in the same regiment as the small tritrigonary prismatohecatonicosidishexacosichoron.