1

1

1

1

4

4

0

0

0

0

1

1

1

1

1

1

2

2

3

3

1

1

6

6

2

2

4

4

0

0

0

0

1

1

0

0

0

0

1

1

1

1

0

0

3

3

1

1

1

1

0

0

0

0

0

0

2

2

1

1

1

1

3

3

0

0

2

2

1

1

4

4

3

3

0

0

0

0

0

0

0

0

0

0

3

3

0

0

5

5

2

2

0

0

5

5

4

4

0

0

0

0

3

3

7

7

7

7

1

1

1

1

0

0

5

5

1

1

0

0

4

4

4

4

5

5

2

2

4

4

1

1

5

5

1

1

2

2

3

3

0

0

0

0

3

3

0

0

0

0

6

6

4

4

3

3

9

9

25

25

7

7

8

8

0

0

1

1

0

0

0

0

2

2

5

5

1

1

0

0

3

3

2

2

5

5

11

11

3

3

3

3

1

1

1

1

0

0

1

1

1

1

6

6

0

0

0

0

0

0

0

0

1

1

0

0

2

2

0

0

0

0

0

0

0

0

4

4

0

0

1

1

0

0

3

3

0

0

0

0