guDi-importance ************** first and foremost let us observe some wordswhere the small change in the letter can make abig difference. If we consider a-aa,i-I,u-U as a set of achchulu and go on keeping any vowel in the set doesnot work in conveying the same meaning.even though they are hrasvamu and deerghamu of the same group we are not supposed to place the first one istead of the second one as all vowels are having their own identity. we cannot repalce the third one instead of the first one.for example vari word is having talakaTTu to the first word.suppose we place deerghamu with the same letter it becomes vaari.further we replace talakaTTu with guDi it becomes viri.guDideerghamu replaces to formm veeri...so.on... vari-vaari-viri-veeri-with meaning of paddy-their-flower-these people vari-dhaanyamu,vaari-manujulu,viri-poovu-veeri vaari dooramuna nunnavaaru-veeri daggaragaa nunnavaaru వరి-ధాన్యము,వారి-మనుజులు,విరి-పూవు-వీరి ...