20

20

2

2

6

6

4

4

2

2

7

7

2

2

9

9

7

7

5

5

1

1

0

0

0

0

4

4

3

3

3

3

7

7

1

1

1

1

0

0

0

0

0

0

3

3

3

3

1

1

5

5

0

0

1

1

3

3

2

2

3

3

2

2

5

5

3

3

2

2

0

0

0

0

0

0

0

0

0

0

3

3

1

1

6

6

2

2

1

1

4

4

2

2

1

1

1

1

6

6

0

0

1

1

0

0

0

0

0

0

2

2

0

0

0

0

2

2

0

0

1

1

1

1

1

1

2

2

2

2

2

2

0

0

3

3

0

0

1

1

0

0

3

3

3

3

0

0

1

1

1

1

3

3

1

1

4

4

0

0

0

0

0

0

1

1

1

1

0

0

2

2

9

9

2

2

2

2

0

0

0

0

0

0

4

4

0

0

1

1

0

0

3

3

0

0

1

1

1

1

1

1

0

0

1

1

1

1

0

0

0

0

2

2

1

1

1

1

1

1

0

0

0

0

0

0

4

4

0

0

1

1

1

1

2

2

0

0

2

2