The Assamese script) is a writing system of the Assamese language. It used to be the script of choice in the Brahmaputra valley for Sanskrit as well as other languages such as Bodo (now Devanagari), Khasi (now Roman), Mising (now Roman) etc. The current form of the script has seen continuous development from the 5th-century Umachal/Nagajari-Khanikargaon rock inscriptions written in an eastern variety of the Gupta script, adopting significant traits from the Siddhaṃ script along the way. By the 17th century three styles of Assamese script could be identified (baminiya, kaitheli and garhgaya) that converged to the standard script following typesetting required for printing. The present standard is identical to the Bengali alphabet except for three letters.