Small rhombic disicositetrachoron

The small rhombic disicositetrachoron, or sirdi, is a nonconvex uniform polychoron that consists of 24 truncated cubes, 24 small rhombihexahedra, and 96 triangular prisms. Two truncated cubes, two small rhombihexahedra, and two triangular prisms join at each vertex.

It can be constructed as the blend of 3 prismatorhombated hexadecachora, with the cuboctahedron cells blending out and the octagonal prisms blending into small rhombihexahedra.

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