0 1
0 1
0 1
0 1
0 1
2 1
-2 0.0833333
0 12
0 1
0 1
0 1
0 1
0 1
2 1
-2 1
0 1
0 1
0 1
0 1
0 1
0 1
2 1
-2 1
