Small tristetracosioctacontachoric alterprism

The small tristetracosioctacontachoron alterprism or setuta is a scaliform segmentoteron. It consists of 2 small tristetracosioctacontachoric bases, joined by 240 rectified pentachoron facetings with 4 tetrahemihexahedra, 4 tetrahedra, and 4 triangular prisms, 960 tetrahedral prisms, and 960 rectified pentachoron facetings with 2 tetrahedra, 2 tetrahemihexahedra, 1+3 triangular prisms, and 3 octahedra.