Bashkir language
The first appearance of a "Bashkir" language is dated back to the 9th century AD, in the form of stone inscription using a Runic alphabet, most likely, this alphabet derives from the Yenisei variant of the old Turkic runic script. This archaic version of a Bashkir language would be more or less a dialect of the proto-Kipchak language, however, since then, the Bashkir language has been through a series of vowel and consonant shifts, which are a result of a common literary history shared with the Idel Tatar language since the formation of the Cuman-Kipchak confederation, when the Oghuric Volga Bulgars started to receive Kipchak Turkic influence and became the Idel Tatars, most likely between the 10th and 11th centuries.