*snrbuni unattested未見語料√ rbunirbuni + sn-instrumental focus工具焦點preterite過去式曾用來聾子（耳聾）的what was used to a deaf personroot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———