6.1

6.2

6.3-1

6.3-2

6.4

6.5-1

6.5-2

6.5-3

6.5-4

6.5-5

6.5-6

6.5-7

6.5-8

6.6

6.7

6.8

6.9

6.10

6.11

6.12