2

0

1

0

21

1

6

6

0

0

0

0

2

0

1

0

0

0

0

0

0

0

0

0

8

0

3

2

2

0

1

0

0

0

0

0

4

0

2

0

0

0

0

0

12

0

6

0

0

0

0

0