0

1

2

0

0

2

6

0

1

6

1

2

6

1

4

1

0

0

6

3

4

1

0

0

0

0

0

0

0

1

0

0

2

0

0

1

0

0

1

0

0

2

0

0

0

0

0

2

-1

0

0

-1

0

2

-1

0

1

-1

0

1