Enneagonal-dodecagonal duoprism

The enneagonal-dodecagonal duoprism or etwadip, also known as the 9-12 duoprism, is a uniform duoprism that consists of 9 dodecagonal prisms, 12 enneagonal prisms and 108 vertices.

This polychoron can be subsymmetrically faceted into a triangular-square triswirlprism, although it cannot be made uniform.