Small rhombic tesseractihexadecachoron

The small rhombic tesseractihexadecachoron, or sirth, is a nonconvex uniform polychoron that consists of 8 truncated octahedra, 16 cubohemioctahedra, and 24 cubes. Two truncated octahedra, two cubohemioctahedra, and two cubes join at each vertex.

Vertex coordinates
The vertices are the same as those of the regiment colonel, the rectified icositetrachoron.