Small 13-5 bigyrochoron

The small 13-5 bigyrochoron is a convex isochoric polychoron with 26 bilaterally-symmetric order-8 truncated digonal-octagonal gyronotches as cells.

Each cell of this polychoron has bilateral symmetry, with 1 square-symmetric octagon, 2 mirror-symmetric hexagons, 2 mirror-symmetric pentagons, 2 kites, and 4 irregular tetragons for faces.