7

0

2

2

2

2

-1

0

1

-1

0

2

-1

0

0

-1

2

4

-1

0

1

-1

3

4

-1

1

2

-1

1

1

-1

1

1

-1

0

1

-1

0

0

-1

0

0

-1

0

0

-1

2

2

-1

1

4

-1

0

0

-1

2

3

-1

0

0