-1

0

2

-1

0

2

-1

1

6

-1

0

0

-1

6

0

-1

0

0

-1

0

4

-1

0

0

-1

0

4

-1

0

0

-1

1

6

-1

0

0

-1

3

0

-1

0

0

-1

1

0

-1

0

0

-1

4

4

-1

0

0

-1

1

0

-1

0

0