Example 4-4

Example 4-5

Example 4-6a

Example 4-6b

Example 4-21b1

Example 4-21b2

Example 4-21b3

Example 4-21b4

Example 4-22-b

Example 4-22-c

Example 4-23c1

Example 4-23c2

Example 4-24c

Example 4-27

Example 4-28b

Example 4-32b

Example 4-33b

Example 4-34b

Example 4-39c

Example 4-40c

Example 4-41a

Example 4-41b

Example 4-42a

Example 4-43c