Buteventhemostfavourableeconomicbalancesheetoftheresultssofarobtainedcouldrevealonlytheincorrectnessofthepreliminarycalculations,thefaultsofplanninganderrorsofdirection.Itcouldinnowayrefutetheempiricallyfirmlyestablishedfactthepossibility,withtheaidofsocialistmethods,ofraisingtheproductivityofcollectivelabourtoanunheardofheight.

Please segment the words:
But even the most favourable economic balance sheet of the results so far obtained could reveal only the incorrectness of the preliminary calculations, the faults of planning and errors of direction. It could in no way refute the empirically firmly established fact the possibility, with the aid of socialist methods, of raising the productivity of collective labour to an unheard of height.