Great retroditetrahedronary prismatodishecatonicosachoron

The great retroditetrahedronary prismatodishecatonicosachoron, or gird tapady, is a nonconvex uniform polychoron that consists of 120 great ditrigonary icosidodecahedra, 720 pentagrammic prisms, and 120 rhombidodecadodecahedra. Four great ditrigonary icosidodecahedra, twelve pentagrammic prisms, and twelve rhombidodecadodecahedra join at each vertex.

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