(Program
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    (Function
      (Identifier)
      (Identifier)
      (Identifier)
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        (Function
          (Identifier)
          (Identifier)
          (Identifier)
          (ExpressionStatements
            (ExpressionStatements
              (FunctionCall
                (Identifier)
                (Identifier)
              { (Identifier)
              ->(Identifier) }))
            (ExpressionStatements
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                (Identifier)
              { (Identifier)
              ->(Identifier) }))))))))