Παράρτημα:Φωνηεντική αρμονία (τουρκικά)/en

See the template {{tr-harmony}} (in Greek)

and its applications as in -cı

※ In phonology, vowel harmony is an assimilatory process in which the vowels of a word have to be members of the same class (thus "in harmony"). [...] Suffixes and prefixes will usually follow vowel harmony rules.
Vowel harmony in the English Wikipedia retr:2020.07.05.
※ Vowel harmony is a type of assimilation which takes place when vowels come to share certain features with contrastive vowels elsewhere in a word or phrase.
Crystal, David. (1991) A dictionary of linguistics and phonetics. 3rd edition. Cambridge, MA: Basil Blackwell. , p. 168

Examples

Forms of -cı
	The last vowel is back, unrounded (a, ı)	The last vowel is front, unrounded (e, i)	The last vowel is back, rounded (o, u)	The last vowel is front, rounded (ö, ü)
The last consonant is voiced b c d g ğ j l m n r v y z	-cı fal > falcı	-ci deniz > denizci	-cu futbol > futbolcu	-cü söz > sözcü
The last consonant is unvoiced f s t k ç ş h p	-çı şarap > şarapçı	-çi çiçek > çiçekçi	-çu ok > okçu	-çü gözlük > gözlükçü
The word ends in a vowel	-cı şarkı > şarkıcı	-ci gazete > gazeteci	-cu uyku > uykucu	-cü büyü > büyücü