Exercise:

1.

Exercise:

2.

Exercise:

3.

Exercise:

4a.

Exercise:

4b.

Exercise:

4c.

Exercise:

4d.

Exercise:

5a.

Exercise:

5b.

Exercise:

6a.

Exercise:

6b.

Exercise:

7a.

Exercise:

7b.

Exercise:

8a.

Exercise:

8b.

Exercise:

9a.

Exercise:

9b.

Exercise:

9c.

Exercise:

9d.

Exercise:

9e.

Exercise:

9f.

Exercise:

9g.

Exercise:

10a.

Exercise:

10b.

Exercise:

10c.

Exercise:

10d.

Exercise:

10e.

Exercise:

10f.

Exercise:

10g.

Exercise:

11a.

Exercise:

11b.

Exercise:

12a.

Exercise:

12b.