0 0 0 0
1 1 1 1
-0.5 0 0 0
-0.5 0 0 0
-0.5 0 0 0
-0.5 0 0 0
0 -0.5 0 0
0 -0.5 0 0
0 -0.5 0 0
0 0 -0.5 0
0 0 -0.5 0
0 0 -0.5 0
0 0 0 -0.5
0 0 0 -0.5
0 0 0 -0.5
0 0 0 -0.5
