20

0

10

0

0

0

0

0

0

0

0

0

7

0

2

3

7

0

3

1

9

1

3

0

7

0

3

1

6

0

2

2

4

0

2

0

0

0

0

0

31

5

8

0

2

0

1

0

7

0

3

1