Retrofrustary trisicositetrachoron

The retrofrustary trisicositetrachoron, or rifti, is a nonconvex uniform polychoron that consists of 24 quasirhombicuboctahedra, 24 small rhombihexahedra, and 24 small cubicuboctahedra. Two quasirhombicuboctahedra, two small rhombihexahedra, and two small cubicuboctahedra join at each vertex.

It can be constructed as a blend of three great skewverted prismatohexadecadisoctachora.

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