v -2      -2      2   
v -2      2       2 
v 2       2       2 
v 2       -2      2 

v -2      -2      -2 
v -2      2       -2 
v 2       2       -2 
v 2       -2      -2 

vn 1.1547 1.1547 -1.1547
vn 1.1547 -1.1547 -1.1547
vn -1.1547 -1.1547 -1.1547
vn -1.1547 1.1547 -1.1547

vn 1.1547 1.1547 1.1547
vn 1.1547 -1.1547 1.1547
vn -1.1547 -1.1547 1.1547
vn -1.1547 1.1547 1.1547
 

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