[ EIdentifier "x"
, ESymbol Bin "-"
, EFraction NormalFrac (ENumber "1") (ENumber "3")
, ESymbol Bin "-"
, EFraction NormalFrac (EIdentifier "x") (ENumber "3")
, ESymbol Bin "-"
, EFraction NormalFrac (ENumber "3") (EIdentifier "x")
, ESymbol Bin "-"
, EFraction NormalFrac (EIdentifier "a") (EIdentifier "x")
, ESymbol Bin "-"
, EFraction NormalFrac (EIdentifier "y") (EIdentifier "x")
, ESymbol Bin "-"
, EFraction
    NormalFrac (ESub (EIdentifier "y") (ENumber "2")) (EIdentifier "x")
, ESymbol Bin "-"
, EFraction
    NormalFrac (ESub (EIdentifier "x") (ENumber "2")) (EIdentifier "x")
, ESymbol Bin "-"
, EFraction
    NormalFrac
    (EIdentifier "y")
    (ESuper (EIdentifier "x") (ENumber "2"))
, ESymbol Bin "-"
, EFraction
    NormalFrac
    (EIdentifier "y")
    (ESuper (EIdentifier "H") (ENumber "2"))
]