18-1

x1

1/1

18-2

x1

1/1

18-3

x1

1/1

18-4

x1

1/1

18-5

x1

1/1

18-6

x1

1/1

18-7

x1

1/1

18-8

x1

1/1

18-9

x1

1/1

18-10

x1

1/1