Syriac alphabet
The Khitan of the Liao (907-1125) had two scripts, the large and small scripts, invented in the 920s. Compared to the other Xianbei Mongolic peoples they have left a relatively more substantial amount of written material, including lengthy inscriptions found on rocks and in tombs, that are currently being deciphered and researched. It is thought that the Old Uyghur alphabet, derived from the Syriac alphabet, was still used by Nestorians and Buddhists within the major tribes of Mongolia until the time of Genghis Khan although no work has survived.