ex. 4

1 ex. 1 

2 ex. 2 

3 ex. 3 

4 ex. 4 

5 ex. 5 

6 ex. 6 

7 ex. 7 

8 ex. 8 

9 ex. 9 

10 ex. 10 

11 ex. 11 

12 ex.12 

13 ex. 13 

14 ex. 14 

15 ex. 15 

16 ex. 16 

17 ex. 17 

18 ex. 18 

19 ex. 19 

20 ex. 20 

21 ex. 21 

22 ex. 22 

23 ex. 23 