Turkish now has an alphabet suited to the sounds of the language: the spelling is largely phonemic, with one letter corresponding to each phoneme. Most of the letters are used approximately as in English, the main exceptions being , which denotes ( being used for the found in Persian and European loans); and the undotted , representing . As in German, and represent and . The letter , in principle, denotes but has the property of lengthening the preceding vowel and assimilating any subsequent vowel. The letters and represent and , respectively. A circumflex is written over back vowels following , , or when these consonants represent , , and —almost exclusively in Arabic and Persian loans.