$MeshFormat
2.1 0 8
$EndMeshFormat
$Nodes
4
1 0 0 0
2 1 0 0
3 1 1 0
4 0 1 0
$EndNodes
$Elements
9
1 15 3 0 1 0 1
2 15 3 0 2 0 2
3 15 3 0 3 0 3
4 15 3 0 4 0 4
5 1 3 0 1 0 1 2
6 1 3 0 2 0 2 3
7 1 3 0 3 0 3 4
8 1 3 0 4 0 4 1
9 3 3 0 6 0 3 4 1 2
$EndElements