v 0 0 0
v 0 0 1
v 0 1 0
v 0 1 1
v 1 0 0
v 1 0 1
v 1 1 0
v 1 1 1

vt 0 0 #1
vt 0 1 #2
vt 1 0 #3
vt 1 1 #4

f 1/2 3/1 7/3 #South/0
f 1/2 7/3 5/4 #1
f 5/2 7/1 8/3 #East/2
f 5/2 8/3 6/4 #3
f 6/2 8/1 4/3 #North/4
f 6/2 4/3 2/4 #5
f 2/2 4/1 3/3 #West/6
f 2/2 3/3 1/4 #7
f 3/2 4/1 8/3 #Top/8
f 3/2 8/3 7/4 #9
f 6/2 2/1 1/3 #Bottom/10
f 6/2 1/3 5/4 #11