Triangular triswirlprism

The triangular triswirlprism is a convex isogonal polychoron that consists of 18 triangular antiprisms and 54 phyllic disphenoids. It is the simplest nontrivial member of the m-gonal n-swirlprisms, formed from the (m*n)-(m*n) duoprism by reducing the (m*n)-gonal prisms into swirling m-gonal antiprisms.