Small prismatodisicositetrachoron

The small prismatodisicositetrachoron, or sepdi, is a nonconvex uniform polychoron compound that consists of 24 truncated cubes, 24 small rhombihexahedra, and 96 triangular prisms. Four truncated cubes, four small rhombihexahedra, and four triangular prisms join at each vertex.

It is a compound of three small rhombic disoctachora, where vertices coincide by two. Some edges also coincide by two.

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