Small dishecatonicosachoron

The small dishecatonicosachoron, or sidahi, is a nonconvex uniform polychoron that consists of 120 small dodecicosahedra and 120 great rhombicosidodecahedra. Two small dodecicosahedra and four great rhombicosidodecahedra join at each vertex.

Vertex coordinates
The vertices are the same as those of the regiment colonel, the sphenoverted hecatonicosidishexacosichoron.