initialise-binding scope
  (collateral
     (bind
        ("z",
         allocate-initialised-variable
           (integers,
            0)),
      bind
        ("x",
         allocate-initialised-variable
           (integers,
            0)),
      map
        ( ),
      map
        ( ),
      map
        ( ),
      map
        ( ),
      map
        ( ),
      map
        ( ),
      map
        ( )),
   sequential
     (assign
        (bound
           ("z"),
         decimal-natural
           ("5")),
      assign
        (bound
           ("x"),
         int-mul
           (decimal-natural
              ("5"),
            decimal-natural
              ("3"))),
      print
        (assigned
           (bound
              ("x"))),
      assign
        (bound
           ("x"),
         decimal-natural
           ("2")),
      print
        (int-mul
           (assigned
              (bound
                 ("x")),
            decimal-natural
              ("3"))),
      scope
        (collateral
           (bind
              ("y",
               allocate-initialised-variable
                 (integers,
                  0)),
            map
              ( ),
            map
              ( )),
         sequential
           (assign
              (bound
                 ("y"),
               decimal-natural
                 ("4")),
            print
              (assigned
                 (bound
                    ("y"))))),
      assign
        (bound
           ("z"),
         int-mul
           (assigned
              (bound
                 ("z")),
            assigned
              (bound
                 ("x")))),
      print
        (assigned
           (bound
              ("z"))),
      print
        (int-add
           (assigned
              (bound
                 ("z")),
            assigned
              (bound
                 ("x"))))))