Small rhombic disoctachoron

The small rhombic disoctachoron, or sirdo, is a nonconvex uniform polychoron that consists of 8 truncated cubes, 8 small rhombihexahedra, and 32 triangular prisms. Two truncated cubes, two small rhombihexahedra, and two triangular prisms join at each vertex.

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