n v fn
4 18 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.8D/base.8D.04N.0001.poly
4 14 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.7D/base.7D.04N.0001.poly
4 12 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.7D/base.7D.04N.0002.poly
4 11 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.6D/base.6D.04N.0001.poly
4 10 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.6D/base.6D.04N.0002.poly
4 9 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.5D/base.5D.04N.0001.poly
4 8 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.5D/base.5D.04N.0003.poly
4 8 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.6D/base.6D.04N.0003.poly
4 8 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.5D/base.5D.04N.0002.poly
4 7 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.5D/base.5D.04N.0004.poly
4 6 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.4D/base.4D.04N.0002.poly
4 6 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.5D/base.5D.04N.0005.poly
4 5 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.4D/base.4D.04N.0003.poly
4 5 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.3D/base.3D.04N.0002.poly
4 4 http://polymake.org/polytopes/paffenholz/data/birkhoff_faces/birkhoff.2D/prod.2D.04N.0001.poly