Archaic/early Tocharian B of the Kuča region, attested in manuscripts from the 5th and 6th centuries CE. From Kuča, the language spread to Šorčuq c. 600 CE, and then eastwards to Turfan and (marginally) westwards to Murtuq in the late 7th century CE. The archaic/early form of Tocharian B, as targeted in the IE-CoR data, is from Kuča, while what is sometimes termed “classical” Tocharian B, represented by the majority of the surviving literary manuscripts, comes from Kuča and sites immediately to its east (Šorčuq, Qarašahr, etc.).
Note on geographical location
Set on Kuča, since manuscript evidence indicates that the original location of Tocharian B speakers was Kuča and its environs (including Qumtura and Subashi) — see especially Peyrot (2008).
