g xia
v -0.715841174 -0.711788952 0
v -0.715841174 0.0502110347 0
v 0.0461588092 0.0502110347 0
v 0.0461588092 -0.711788952 0
vt 0 0
vt 0 1
vt 1 1
vt 1 0
vn -0 0 1
vn -0 0 1
vn -0 0 1
vn -0 0 1
g xia_0
f 3/3/3 2/2/2 1/1/1
f 4/4/4 3/3/3 1/1/1