Comments:Дыбо 313, Лексика 284. Martin 247, Whitman 210. The vocalism in Mong. *bul-či- is probably influenced by the descriptive root bul- (bult-, buld-, bült- etc.) 'to be swollen, swell', see *pi̯óla. Note that PT, Mong. and Jpn. reflect a common derivative *bi̯ol-t`i- (*bi̯oli-t`V-).