between Mongolian and Turkic. Pritsak analyzed 33 surviving Hunnic personal names and concluded: "It was not a Turkic language, but one between Turkic and Mongolian, probably closer to the former than the latter. The language had strong ties to Bulgar language and to modern Chuvash, but also had some important connections, especially lexical and morphological, to Ottoman Turkish and Yakut". The "traditional and prevailing view is [...] that the Xiongnu and/or the Huns were Turkic" speakers. Otto Maenchen-Helfen argues that many tribal and proper names among the Huns appear to have originated in Turkic languages, indicating that the language was Turkic. Hyun Jin Kim similarly concluded that it "seems highly likely then from the names that we do know, most of which seem to be Turkic, that the Hunnic elite was predominantly Turkic-speaking". Denis Sinor, while skeptical of our ability to classify Hunnic as a whole, states that part of the Hunnish elite likely spoke Turkic, though he notes that some Hunnic names cannot be Turkic in origin. The historian Peter Heather, while he supported the Turkic hypothesis as the "best guess" in 1995, has since voiced skepticism, in 2010 saying that "the truth is that we don't know what language the Huns spoke, and probably never will". Savelyev and Jeong similarly note that "the majority of the previously proposed Turkic etymologies for the Hunnic names are far from unambiguous, so no firm conclusion can be drawn from this type of data." Yeniseian Some scholars – most notably Lajos Ligeti (1950/51) and Edwin G. Pulleyblank (1962) – have claimed that languages of Siberia, especially Ket – a member of the Yeniseian language family – may have been a major source (or perhaps even the linguistic core) of the Xiongnu and/or Hunnic languages. First proposed by Edwin G. Pulleyblank, the theory that the Xiongnu language belonged to the Yeniseian languages was reinforced by the discovery of the Kot and Pumpokol word lists, which Alexander Vovin used to create a more accurate reconstruction. Hyun Jin Kim in 2013 proposed that the Huns experienced a language flip like the Chagatai Khanate, switching from Yeniseian to Oghuric Turkic after absorbing the Dingling or Tiele peoples. Vajda (et al. 2013) proposed that the ruling elite of the Huns spoke a Yeniseian language and influenced other languages in the region. The Yeniseian people were likely assimilated later by Turkic and Mongolic groups. Alexander Savelyev and Choongwon