Small retrofrustary prismatotrisicositetrachoron

The small retrofrustary prismatotrisicositetrachoron, or sirfipti, is a nonconvex uniform polychoron that consists of 24 great rhombihexahedra, 24 small rhombihexahedra, 24 cuboctatruncated cuboctahedra, and 96 hexagonal prisms. Two great rhombihexahedra, two small rhombihexahedra, four cuboctatruncated cuboctahedra, and four hexagonal prisms join at each vertex.

It has the same cell counts as the great retrofrustary prismatotrisicositetrachoron, but the great rhombihexahedra and small rhombihexahedra are in different positions.

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