Triangular triswirlprism

The triangular triswirlprism is a convex isogonal polychoron that consists of 12 triangular antiprisms, 36 tetragonal disphenoids and 72 sphenoids obtained as the convex hull of two orthogonal 3-3 duoantiprisms. 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.