4.1

4.2

4.2

4.2

4.2

4.2

4.3

4.3

4.3

4.3

4.3

4.3

4.3

4.4

4.4

4.3

4.4

4.4

4.4

4.4

4.5

4.4

4.5

4.5

4.5

4.6

4.7

4.7

4.2

4.8