https://en.wikipedia.org/wiki/Pahlavi_scripts
Pahlavi is a particular, exclusively written form of various Middle Iranian languages.The essential characteristics of Pahlavi are: the use of a specific Aramaic-derived script;; the incidence of Aramaic words used as heterograms (called hozwārishn, "archaisms").; Pahlavi compositions have been found for the dialects/ethnolects of Parthia, Persis, Sogdiana, Scythia, and Khotan.