GRID2D_OF_POINTS3D
3 3
0.0 2.0 0.0
1.0 2.0 0.0
2.0 2.0 0.0
0.0 1.0 1.0
1.0 1.0 1.0
2.0 1.0 1.0
0.0 0.0 2.0
1.0 0.0 2.0
2.0 0.0 2.0