[ESubsup (ESymbol Op "\8747") (ENumber "0") (ENumber "1"),ESymbol Bin "+",ESubsup (EFraction NormalFrac (EIdentifier "x") (EIdentifier "y")) (ENumber "0") (EIdentifier "a"),ESymbol Bin "+",ESubsup (EFraction NormalFrac (EIdentifier "x") (EIdentifier "y")) (ENumber "0") (ENumber "1"),ESymbol Bin "+",ESubsup (ESymbol Op "\8747") (ENumber "0") (EIdentifier "a")]