<<< native [ ESuper (EIdentifier "x") (ENumber "1") , ESymbol Bin "+" , ESuper (EIdentifier "x") (EIdentifier "a") , ESymbol Bin "+" , ESuper (EIdentifier "H") (EIdentifier "a") , ESymbol Bin "+" , ESuper (EIdentifier "H") (ENumber "1") , ESymbol Bin "+" , ESubsup (EIdentifier "x") (ENumber "1") (ENumber "2") , ESymbol Bin "+" , ESubsup (EIdentifier "x") (EIdentifier "a") (ENumber "2") , ESymbol Bin "+" , ESubsup (EIdentifier "x") (ENumber "1") (EIdentifier "x") , ESymbol Bin "+" , ESubsup (EIdentifier "x") (EIdentifier "a") (EIdentifier "x") , ESymbol Bin "+" , ESubsup (EIdentifier "H") (ENumber "1") (ENumber "2") , ESymbol Bin "+" , ESubsup (EIdentifier "H") (EIdentifier "a") (ENumber "2") , ESymbol Bin "+" , ESubsup (EIdentifier "H") (ENumber "1") (EIdentifier "x") , ESymbol Bin "+" , ESubsup (EIdentifier "H") (EIdentifier "a") (EIdentifier "x") ] >>> mml $$x^1+x^a+H^a+H^1+x_1^2+x_a^2+x_1^x+x_a^x+H_1^2+H_a^2+H_1^x+H_a^x$$