15

0

5

5

0

0

0

0

10

0

4

2

0

0

0

0

6

0

3

0

0

0

0

0

6

0

1

4

0

0

0

0

2

0

1

0

0

0

0

0

3

0

1

1

2

0

1

0

2

0

1

0