v 1 -1 -1 
v 1 1 -1 
v 1 1 1 
v 1 -1 1 
v -1 -1 1 
v -1 1 1 
v -1 1 -1 
v -1 -1 -1
        
f 5 4 3 6 
f 8 1 4 5 
f 6 3 2 7 
f 7 2 1 8 
f 4 1 2 3 
f 8 5 6 7
        
s 4 4 3 2 5 
s 4 7 0 3 4 
s 4 5 2 1 6 
s 4 6 1 0 7 
s 4 3 0 1 2 
s 4 7 4 5 6