0
4 0/1 0/1 1/1 0/1 1/1 1/1 0/1 1/1 
0
4 0/1 0/1 1/1 0/1 1/1 1/1 0/1 1/1 
1
4 0/1 0/1 1/1 0/1 1/1 1/1 0/1 1/1  0 

1
4 0/1 0/1 1/1 0/1 1/1 1/1 0/1 1/1  0 

0

0

0

1
0  1 4 0/1 1/1 1/1 1/1 1/1 0/1 0/1 0/1  

1
0  1 4 0/1 1/1 1/1 1/1 1/1 0/1 0/1 0/1

1

# two equivalent polygons 
