8 7 1 0 2

1
8

1 2 0 0 1
1
0

2 3 0 0 0
1 1

3 4 0 0 1
1
3 1 1 1 2

4 5 0 0 0
2 2 1 -1

5 6 0 0 1
1
0

6 7 0 0 0
1 1

7 8 0 0 0
2 1 1 -1


 0 0 0

 0 0 0
