(Statements
  (Plus
    (Identifier)
    (Identifier))
  (Minus
    (Identifier)
    (Identifier))
  (Times
    (Identifier)
    (Identifier))
  (DividedBy
    (Identifier)
    (Identifier))
  (Modulo
    (Identifier)
    (Identifier))
  (FloorDivision
    (Identifier)
    (Identifier))
  (Power
    (Identifier)
    (Identifier))
  (BOr
    (Identifier)
    (Identifier))
  (BAnd
    (Identifier)
    (Identifier))
  (BXOr
    (Identifier)
    (Identifier))
  (LShift
    (Identifier)
    (Identifier))
  (RShift
    (Identifier)
    (Identifier)))