DM Object: 2 MPI processes
  type: network
  NSubnets: 1; NEdges: 4; NVertices: 5; NSharedVertices: 0.
  [0] nEdges: 2; nVertices: 3; nSharedVertices: 0
     Subnet 0: nEdges 2, nVertices(include shared vertices) 3
       edge 0: 1 ----> 0
       edge 1: 2 ----> 0
  [1] nEdges: 2; nVertices: 3; nSharedVertices: 0
     Subnet 0: nEdges 2, nVertices(include shared vertices) 3
       edge 2: 3 ----> 0
       edge 3: 4 ----> 0

CoordinatePrint, cdim 2:
[0]
Vertex: 0, x =  0.000000 y = 0.000000 
Vertex: 1, x =  1.000000 y = 0.000000 
Vertex: 2, x =  0.000000 y = 1.000000 
[1]
Vertex: 0, x =  0.000000 y = 0.000000 
Vertex: 3, x =  -1.000000 y = 0.000000 
Vertex: 4, x =  -0.000000 y = -1.000000