The Ottoman Turkish alphabet is a Turkish form of the Perso-Arabic script. Well suited to writing Arabic and Persian borrowings, it was poorly suited to native Turkish words. When it came to consonants, Arabic has several consonants that do not exist in Turkish, making several Arabic letters superfluous except for Arabic loanwords; conversely, a few letters had to be invented to write letters in Persian and Turkish that Arabic did not have (such as "g" or "p"). In the case of vowels, Turkish contains eight different short vowels and no long ones, whereas Arabic (and Persian) have three short and three long vowels; further complicating matters was that in the Arabic script, only long vowels are usually expressed. Still, Turkic languages such as Azerbaijani and Uzbek continue to be written using Arabic script in Iran, Afghanistan, and Iraq.