Комментарии:Laufer 1919, 575 (Doerfer: "lautlich unmöglich"). Cf. perhaps Nan. furgẽ 'loud, bass' (ТМС 2, 303). The final velar element is suffixed, and the suffixes are different here (Jpn. -k- pointing to *-k`- or -k-, but Turcic and Mongolian - to *-g-).
