Elements: 8
1 1 2 13 1
2 13 10 9 1
3 9 15 3 1
4 15 12 5 1
5 10 4 14 1
6 14 7 11 1
7 11 16 12 1
8 16 8 6 1

Nodes: 9
1 0.0 0.0
2 0.0 1.0
3 1.0 0.0
4 1.0 1.0
5 0.0 0.5
6 0.5 0.0
7 0.5 0.5
8 0.5 1.0
9 1.0 0.5

Edges: 16
1 1 5 -1 2 1
2 1 6 -1 2 2
3 5 2 -1 2 1
4 6 3 -1 2 2
5 2 8 -1 2 1
6 8 4 -1 2 1
7 3 9 -1 2 2
8 4 9 -1 2 2
9 5 7 -1
10 6 7 -1 
11 7 9 -1
12 7 8 -1
13 5 6 -1 
14 3 7 -1
15 2 7 -1
16 8 9 -1

Materials: 1
1 1 0 0 1 0 0

Neumann: 2
1 1
2 -1