[EGrouped [EBinary "\\frac" (EGrouped [EIdentifier "x",ESymbol Op "+",EIdentifier "y",ESymbol Op "+",EIdentifier "z"]) (EGrouped [EIdentifier "x",EUnary "\\phantom" (EGrouped [ESymbol Op "+"]),EUnary "\\phantom" (EGrouped [EIdentifier "y"]),ESymbol Op "+",EIdentifier "z"])]]