4

1

1

4

2

2

0

0

2

0

1

1

7

2

4

2

1

2

3

1

2

2

0

0

7

0

1

3

0

0

0

0

0

0

1

1

-1

0

2

-1

2

2

0

1

1

0

0

0

0

0

0

0

0

1

0

2

4

0

0

0