1

3

4

2

2

2

2

1

0

0

1

1

0

0

2

1

1

2

1

0

2

0

1

0

4

1

2

0

1

0

2

0

2

0

1

0

2

0

4

0

1

0

5

2

3

0

1

0

1

0