-1

0

2

-1

0

0

-1

0

0

-1

0

0

-1

1

3

-1

1

1

-1

0

1

-1

0

1

0

0

0

0

0

0

0

0

0

0

0

0

-1

0

3

-1

0

0

-1

1

1

-1

0

0

-1

3

4

-1

2

2

4

0

1

3

0

1