Elements: 4 1 1 5 6 1 2 2 5 7 1 3 3 6 8 1 4 4 7 8 1 Nodes: 5 1 0.0 0.0 2 1.0 0.0 3 0.0 1.0 4 1.0 1.0 5 0.5 0.5 Edges: 8 1 1 2 -1 2 1 2 1 3 -1 2 2 3 2 4 -1 2 2 4 3 4 -1 2 1 5 1 5 -1 6 2 5 -1 7 3 5 -1 8 4 5 -1 Materials: 1 1 1 0 0 1 0 0 Neumann: 2 1 1 2 -1