Icositetrahemiicositetrachoron

The icositetrahemiicositetrachoron, or ihi, is a nonconvex uniform polychoron. It has 24 tetrahemihexahedra and 12 central cuboctahedra, with 6 tetrahemihexahedra and 6 cuboctahedra at each vertex.

As well as being isogonal, it is also isotoxal.

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