Retroditrigonary dishecatonicosachoron

The retroditrigonary dishecatonicosachoron, or ridditdy, is a nonconvex uniform polychoron that consists of 120 ditrigonary dodecadodecahedra and 120 rhombidodecadodecahedra. 2 ditrigonary dodecadodecahedra and 6 rhombidodecadodecahedra join at each vertex.

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