<<< mml $\begin{array}{lll}1& x+y& x^2+2yx+y^2\\ x+y& x^2+2yx+y^2& x^3+3y{x}^2+3y^{2}x+y^3\\ x^2+2yx+y^2& x^3+3y{x}^2+3y^{2}x+y^3& x^4+4y{x}^3+6y^2{x}^2+4y^{3}x+y^4\\ x^3+3y{x}^2+3y^{2}x+y^3& x^4+4y{x}^3+6y^2{x}^2+4y^{3}x+y^4& x^5+5y{x}^4+10y^2{x}^3+10y^3{x}^2+5y^{4}x+y^5\end{array}$ >>> native [ EArray [ AlignLeft , AlignLeft , AlignLeft ] [ [ [ ENumber "1" ] , [ EGrouped [ EIdentifier "x" , ESymbol Bin "+" , EIdentifier "y" ] ] , [ EGrouped [ ESuper (EIdentifier "x") (ENumber "2") , ESymbol Bin "+" , EGrouped [ ENumber "2" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "2") ] ] ] , [ [ EGrouped [ EIdentifier "x" , ESymbol Bin "+" , EIdentifier "y" ] ] , [ EGrouped [ ESuper (EIdentifier "x") (ENumber "2") , ESymbol Bin "+" , EGrouped [ ENumber "2" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "2") ] ] , [ EGrouped [ ESuper (EIdentifier "x") (ENumber "3") , ESymbol Bin "+" , EGrouped [ ENumber "3" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "2") ] , ESymbol Bin "+" , EGrouped [ ENumber "3" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "2") , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "3") ] ] ] , [ [ EGrouped [ ESuper (EIdentifier "x") (ENumber "2") , ESymbol Bin "+" , EGrouped [ ENumber "2" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "2") ] ] , [ EGrouped [ ESuper (EIdentifier "x") (ENumber "3") , ESymbol Bin "+" , EGrouped [ ENumber "3" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "2") ] , ESymbol Bin "+" , EGrouped [ ENumber "3" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "2") , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "3") ] ] , [ EGrouped [ ESuper (EIdentifier "x") (ENumber "4") , ESymbol Bin "+" , EGrouped [ ENumber "4" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "3") ] , ESymbol Bin "+" , EGrouped [ ENumber "6" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "2") , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "2") ] , ESymbol Bin "+" , EGrouped [ ENumber "4" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "3") , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "4") ] ] ] , [ [ EGrouped [ ESuper (EIdentifier "x") (ENumber "3") , ESymbol Bin "+" , EGrouped [ ENumber "3" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "2") ] , ESymbol Bin "+" , EGrouped [ ENumber "3" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "2") , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "3") ] ] , [ EGrouped [ ESuper (EIdentifier "x") (ENumber "4") , ESymbol Bin "+" , EGrouped [ ENumber "4" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "3") ] , ESymbol Bin "+" , EGrouped [ ENumber "6" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "2") , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "2") ] , ESymbol Bin "+" , EGrouped [ ENumber "4" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "3") , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "4") ] ] , [ EGrouped [ ESuper (EIdentifier "x") (ENumber "5") , ESymbol Bin "+" , EGrouped [ ENumber "5" , ESymbol Ord "\8290" , EIdentifier "y" , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "4") ] , ESymbol Bin "+" , EGrouped [ ENumber "10" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "2") , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "3") ] , ESymbol Bin "+" , EGrouped [ ENumber "10" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "3") , ESymbol Ord "\8290" , ESuper (EIdentifier "x") (ENumber "2") ] , ESymbol Bin "+" , EGrouped [ ENumber "5" , ESymbol Ord "\8290" , ESuper (EIdentifier "y") (ENumber "4") , ESymbol Ord "\8290" , EIdentifier "x" ] , ESymbol Bin "+" , ESuper (EIdentifier "y") (ENumber "5") ] ] ] ] ]