Great retroinverted prismatotetracontoctachoron

The great retroinverted prismatotetracontoctachoron, or gripic, is a nonconvex uniform polychoron that consists of 48 quasitruncated hexahedra and 192 triangular prisms. Eight quasitruncated hexahedra and eight triangular prisms join at each vertex.

It also has octahedra as pseudofacets.

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