Persians adapted the Arabic alphabet

After initiation of Islam in the 7 th century, Persians adapted the Arabic alphabet to Persian and developed the contemporary Persian alphabet. Arabic alphabet has 28 characters and Iranians added another four letters in it to arrive at existing 32 Persian letter. Around one thousand years ago, Ibn Muqlah and his brother created six genres of Iranian calligraphy, namely "Tahqiq", "Reyhan", "Sols