OFF
# File created from 2D grid of points.
6 2 0
0.0 2.0 0.0
1.0 2.0 0.0
0.0 0.0 1.0
1.0 0.0 1.0
0.0 0.0 2.0
1.0 0.0 2.0

4 0 1 3 2
4 2 3 5 4