v 0 1.0 -0.5 
v 0 1.0 0.5 
v -1.0 0 -0.5 
v -1.0 0 0.5 
v 0 -1.0 -0.5 
v 0 -1.0 0.5 
v 1.0 0.0 0.5 
v 1.0 0.0 -0.5 

f 8 5 3 1 
f 7 2 4 6 
f 8 1 2 7 
f 1 3 4 2 
f 3 5 6 4 
f 5 8 7 6

s 4 7 4 2 0 
s 4 6 1 3 5 
s 4 7 0 1 6 
s 4 0 2 3 1 
s 4 2 4 5 3 
s 4 4 7 6 5