[ ESuper (EIdentifier "x") (ENumber "2")
, ESymbol Bin "+"
, ESuper (ENumber "2") (ENumber "2")
, ESymbol Bin "+"
, ESuper (EIdentifier "x") (ESymbol Ord "\8242")
, ESymbol Bin "+"
, ESuper (EIdentifier "x") (ESymbol Accent "'")
, ESymbol Bin "+"
, ESuper (EIdentifier "x") (EMathOperator "''")
, ESymbol Bin "+"
, EIdentifier "x"
, EIdentifier "\8242"
, ESymbol Bin "+"
, ESuper
    (ESuper (EIdentifier "x") (ESymbol Accent "'"))
    (ESymbol Accent "'")
, ESymbol Bin "+"
, ESuper
    (ESuper (EIdentifier "x") (ESymbol Accent "'")) (ENumber "2")
, ESymbol Bin "+"
, ESuper
    (EIdentifier "x")
    (EGrouped
       [ ESymbol Accent "'" , ESymbol Bin "+" , ESymbol Accent "'" ])
, ESymbol Bin "+"
, ESuper
    (ESuper (EIdentifier "x") (ESymbol Accent "'"))
    (ESymbol Accent "'")
, ESymbol Bin "+"
, ESuper
    (EIdentifier "x")
    (ESuper (ESymbol Accent "'") (ESymbol Accent "'"))
, ESymbol Bin "+"
, ESuper (ESymbol Accent "'") (ESymbol Accent "'")
, ESymbol Bin "+"
, ESuper (ESymbol Accent "'") (ESymbol Accent "'")
]