# BEGIN ARRANGEMENT # number_of_vertices 4 # number_of_edges 4 # number_of_faces 2 # BEGIN VERTICES 0 2 0 0 3 0 1 2 0 1 3 0 # END VERTICES # BEGIN EDGES 0 1 0 0 1 3 0 0 3 2 1 0 2 0 1 0 # END EDGES # BEGIN FACES # BEGIN FACE 1 0 # number_of_outer_ccbs 0 # number_of_inner_ccbs 1 # halfedges_on_inner_ccb 4 0 2 4 6 # number_of_isolated_vertices 0 # END FACE # BEGIN FACE 1 1 # number_of_outer_ccbs 1 # halfedges_on_outer_ccb 4 1 7 5 3 # number_of_inner_ccbs 0 # number_of_isolated_vertices 0 # END FACE # END FACES # END ARRANGEMENT # BEGIN CURVES # number_of_curves 1 P[2(0,P[2(0,8)(2,3)])(2,P[0(0,5)])] # induced_edges 0 # END CURVES