   UNSTRING identifier-1
   ~~~~~~~~
        DELIMITED BY { [ ALL ] literal-1 } [ OR { [ ALL ] literal-2 } ]...
        ~~~~~~~~~    {   ~~~             }   ~~ {   ~~~             }
                     { identifier-2      }      { identifier-3      }

        INTO { identifier-4
        ~~~~ [ DELIMITER IN identifier-5 ] [ COUNT IN identifier-6 ] }...
               ~~~~~~~~~                     ~~~~~
      [ WITH POINTER identifier-7 ]
             ~~~~~~~
      [ TALLYING IN identifier-8 ]
        ~~~~~~~~
      [ ON OVERFLOW imperative-statement-1 ]
           ~~~~~~~~
      [ NOT ON OVERFLOW imperative-statement-2 ]
        ~~~    ~~~~~~~~
 [ END-UNSTRING ]
   ~~~~~~~~~~~~