<<< native [ 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")) ] >>> mml $$x-\frac{1}{3}-\frac{x}{3}-\frac{3}{x}-\frac{a}{x}-\frac{y}{x}-\frac{y_2}{x}-\frac{x_2}{x}-\frac{y}{x^2}-\frac{y}{H^2}$$