v -1.0 -1.0 -2.0 
v  1.0 -1.0 -2.0
v  1.0  1.0 -2.0 
v -1.0  1.0 -2.0 

v -1.0 -1.0 -4.0 
v  1.0 -1.0 -4.0
v  1.0  1.0 -4.0 
v -1.0  1.0 -4.0 


f	1	2	3
f	3	4	1

f	6	5	7
f	5	8	7

f	2	6	3
f	7	3	6

f	1	4	5
f	4	8	5

f	4	7	8
f	4	3	7

f	5	6	1
f	6	2	1