3, Π <Α<Π3+− B/ 2 6 1 A/ 2 6 16− D/ 1 2 6− − C/ 1 2 6

3

,

π <α<π

3

+

B/

2 6 1

A/

2 6 1

6

D/

1 2 6

− −

C/

1 2 6