13

0.0 1.0
-0.25 0.5
0.0 0.0
0.5 -0.25
1.0 0.0
1.25 0.5 
1.0 1.0
0.5 1.25
0.0 1.0
-0.25 0.5
0.0 0.0
0.5 -0.25
1.0 0.0
