degree: 
2 4 3 4 3 4 4 2 1 1 
Reverse Cuthill-McKee ordering starting at :6
8 3 0 9 2 5 1 4 7 6 
Reverse Cuthill-McKee ordering starting at :0
9 1 4 6 7 2 8 5 3 0 
Reverse Cuthill-McKee ordering:
0 8 5 7 3 6 4 2 1 9 
