1
8
0/1 2/1 0/1
2/1 2/1 0/1
2/1 0/1 0/1
0/1 0/1 0/1
0/1 2/1 4/1
0/1 0/1 4/1
2/1 0/1 4/1
2/1 2/1 4/1