(Program
{-(Subscript
    (Identifier)
    (Enumeration
      (Integer)
      (Integer)
      (Empty))
    (Ellipsis))-}
  (Subscript
    (Identifier)
    (Enumeration
      (Empty)
      (Empty)
      (Empty)))
  (Subscript
  { (Identifier)
  ->(Identifier) }
    (Enumeration
    { (Integer)
    ->(Integer) }
      (Empty)
      (Empty)))
{+(Subscript
    (Identifier)
    (Enumeration
      (Integer)
      (Integer)
      (Empty))
    (Ellipsis))+}
  (Subscript
  { (Identifier)
  ->(Identifier) }
    (Enumeration
      (Empty)
      (Empty)
      (Empty))))