*mprbuni unattested未見語料√ rbunirbuni + mp-agent focus主事焦點future未來式distant遠將要聾子（耳聾）（遠期）will a deaf person (sometime later)root詞根√ rbuniAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式*rmbuni——*srbuniPRET過去式*rmnbuni—*rnbuni*snrbuniFUT未來式*mprbuniDIST遠———derived stems衍生詞幹AF主事焦點LF處所焦點PF受事焦點IF工具焦點k-krbuni———