_______________________________________________
| |
| __ __ |
| _- -_ _- -_ |
| ( )( ) 5 |
| ( () ) |
| ( 1 ( ) ) |
| ( ( 3 ) ) |
| ( 2 ( ) 4 ) |
| ( () ) |
| (_ _)(_ _) 6 |
| A -__ - -__- B |
| |
|_______________________________________________|