2
0 0 -1 0 0 1 1 2 -1 0
0 0 -1 0 0 1 1 -1 0 0
0
2
0 0 -1 0 0 1 1 -2 -1 0
0 0 -1 0 0 1 1 1 0 0
0
# BEGIN ARRANGEMENT
# number_of_vertices
2
# number_of_edges
4
# number_of_faces
4
# BEGIN VERTICES
4 2 1 0 0 -1
8
4 3 1 0 0 1
4
# END VERTICES
# BEGIN EDGES
1 0 1 1 0 0 -1 0 0 1 1 -1 0 0
5
5
1 0 1 1 0 0 -1 0 0 1 1 -2 -1 0
8
8
1 0 1 1 0 0 -1 0 0 1 1 2 -1 0
8
8
1 0 1 1 0 0 -1 0 0 1 1 1 0 0
5
5
# END EDGES
# BEGIN FACES
# BEGIN FACE
0 1 
# number_of_outer_ccbs
0
# number_of_inner_ccbs
1
# halfedges_on_inner_ccb
2
1 6 
# number_of_isolated_vertices
0
6
# END FACE
# BEGIN FACE
0 1 
# number_of_outer_ccbs
1
# halfedges_on_outer_ccb
2
3 0 
# number_of_inner_ccbs
0
# number_of_isolated_vertices
0
9
# END FACE
# BEGIN FACE
0 1 
# number_of_outer_ccbs
1
# halfedges_on_outer_ccb
2
5 2 
# number_of_inner_ccbs
0
# number_of_isolated_vertices
0
12
# END FACE
# BEGIN FACE
0 1 
# number_of_outer_ccbs
1
# halfedges_on_outer_ccb
2
7 4 
# number_of_inner_ccbs
0
# number_of_isolated_vertices
0
9
# END FACE
# END FACES
# END ARRANGEMENT
