Between 624 and 1323, the Telugu language emerged as a literary medium alongside Prakrit and Sanskrit. From around 848 (during the time of Gunaga Vijayaditya) to the 11th century, the language progressed from stanzas to full literary works. At this time, it was written in old Telugu script; Al-Beruni referred to the script as "Andhri" in his 1000 "Kitab Al-Hind". During the 11th century, the "Mahabharata" was partially translated by court poet Nannaya under the patronage of the Eastern Chalukya ruler Rajaraja Narendra. Modern Telugu script evolved from the old Telugu script from the 11th to the 19th centuries.