[EGrouped [EArray [AlignDefault,AlignDefault,AlignDefault] [[[EIdentifier "H"],[EStretchy (ESymbol Accent "\8594")],[EIdentifier "G"]],[[EStretchy (ESymbol Op "\8595")],[ESpace "3em"],[EStretchy (ESymbol Op "\8595")]],[[EIdentifier "K"],[EStretchy (ESymbol Accent "\8594")],[EIdentifier "L"]]]]]