9

     -  (4 ) (   4  )
     "-"  (6 ) (   4 )
     "-"  (8 ) (   4 )
         "-"  (10 ) (   4 )
          () 10  (   4  )
          () (8 ) (   4  )
          () (6 ) (   4  )
          () (4 ) (   4  )
       (   )
    %
    ( )