Small hexacosihecatonicosihecatonicosachoron

The small hexacosihecatonicosihecatonicosachoron, or sixhihy, is a nonconvex uniform polychoron that consists of 600 regular tetrahedra, 120 regular dodecahedra, and 120 small dodecicosidodecahedra. 1 tetrahedron, 1 dodecahedron, and 3 small dodecicosidodecahedra join at each vertex.

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