Invertofrustary tetrishecatonicosachoron

The invertofrustary tetrishecatonicosachoron, or ifthi, is a nonconvex uniform polychoron that consists of 120 great dodecicosidodecahedra, 120 great ditrigonal dodecicosidodecahedra, 120 small dodecicosidodecahedra, and 120 small ditrigonal dodecicosidodecahedra. Two great dodecicosidodecahedra, two great ditrigonal dodecicosidodecahedra, two small dodecicosidodecahedra, and two small ditrigonal dodecicosidodecahedra join at each vertex.

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