2

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

�

5

5

5

5

5

�

5

5

5

5

6

6

6

6

6

6

6

6

6

6