Transitional 1-bitridodecahedral swirlprism

The gyrocantellated-triprismatic 1-bitridodecahedral swirlprism is a convex isogonal polychoron, formed as a convex hull of three hexacosichora in a way that leaves eighteen corealmic vertices corresponding to a gyrocantellated triangular prism. It consists of 120 gyrocantellated triangular prisms, 240 triangular frustums and 360 tetragonal antiwedges.