Given (Parentheses):
   (  



     )

  ( hello


       
      )

  (vibd)
  (dvib)
  (dib)
  ()

Do (Delete inner %):
  16gg0
  di%
  kdi%
  kdvi%
  kvi%d
  3kdi%
  4kdi%

Expect (Verify):
   (
     )

  (
       
      )

  ()
  (b)
  ()
  ()