Square-octagonal duoprism

The 4-8 duoprism is a uniform duoprism that consists of 4 octagonal prisms, 8 square prisms and 32 vertices.

This polychoron can be alternated into a 2-4 duoantiprism, although it cannot be made uniform. The octagons can also be alternated into long rectangles to create a bialternatosnub 2-4 duoprism, which is also nonuniform.