Great sphenoretrofrustary trishecatonicosachoron

The great sphenoretrofrustary trishecatonicosachoron, or gwirfthi, is a nonconvex uniform polychoron that consists of 120 great dodecicosidodecahedra, 120 small ditrigonal dodecicosidodecahedra, and 120 quasitruncated dodecadodecahedra. Two great dodecicosidodecahedra, two small ditrigonal dodecicosidodecahedra, and four quasitruncated dodecadodecahedra join at each vertex.

Vertex coordinates
Its vertices are the same as those of its regiment colonel, the antifrustary hexacositrishecatonicosachoron.