[ EDelimited
    "("
    ")"
    [ Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    , Right (ESymbol Bin "+")
    , Right (EIdentifier "x")
    ]
]