Great birhombated heptapeton

The great birhombated heptapeton or gabril, also called the bicantitruncated heptapeton or bicantitruncated 6-simplex, is a convex uniform polypeton. It consists of 7 great birhombidodecatera, 7 great rhombated hexatera, and 35 triangular-tetrahedral duoprisms. 3 great birhombidodecatera, 2 great rhombated hexatera, and 1 triangular-tetrahedral duoprism join at each vertex. As the name suggests, it is the bicantitruncation of the heptapeton.