1*c4762a1bSJed Brown cell 0 2 3 4 5 2*c4762a1bSJed Brown cell 0 2 3 4 5 3*c4762a1bSJed Brown cell 1 4 5 6 7 4*c4762a1bSJed Brown cell 1 4 5 6 7 5*c4762a1bSJed Brown vertex 4 0 1 6