Sindhi adopted a variant of the Persian alphabet as well, in the 19th century. The script is used in Pakistan today, albeit unlike most other native languages of Pakistan, the Naskh style is more common for Sindhi writing than the Nasta'liq style. It has a total of 52 letters, augmenting the Urdu with digraphs and eighteen new letters () for sounds particular to Sindhi and other Indo-Aryan languages. Some letters that are distinguished in Arabic or Persian are homophones in Sindhi.