Small ditetrahedronary distrishecatonicosihexacosichoron

The small ditetrahedronary distrishecatonicosihexacosichoron, or siddatdahix, is a nonconvex uniform polychoron that consists of 120 ditrigonary dodecadodecahedra, 600 tetrahedra, and 120 icosidodecahedra. Four ditrigonary dodecadodecahedra, four tetrahedra, and six icosidodecahedra join at each vertex.

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