mbongfaxnsky (used in South Guangnan, Yanshan, Maguan Nong)侬话西北次土语Northwestern Daez Dialect pongfax侬话中部次土语(文山市、砚山县、西畴县)Central Nong Dialect (Wenshan, Yanshan & Xichou Counties)fonghfaxʔboŋ¹³fa⁵³广南县那洒镇Nasa District, Guangnan County原始台语Proto-Tai*ʔbon A1 + *va C2李方桂 1977年Li Fang-Kuei 1977