v 4 -3.73096 2.70046
v 4 -3.43378 1.74564
v -4 -3.43378 1.74564
v -4 -3.43378 1.74564
v -4 -3.73096 2.70046
v 4 -3.73096 2.70046
f 1 2 3
f 4 5 6