(Program
  (If
  { (Identifier)
  ->(Identifier) }
    (
    { (Identifier)
    ->(Identifier) }
    { (Identifier)
    ->(Identifier) })
  { (If
      (Identifier)
      (
        (Identifier)
        (Identifier))
      (
        (Identifier)
        (Identifier)))
  ->(Empty) }))