*sbruwa unattested未見語料√ bruwabruwa + s-instrumental focus工具焦點用來雷的；用…雷to thunder with; the thing used for thunderringroot詞根√ bruwaAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式mbruwa——*sbruwaPRET過去式*bmnruwa—*bnruwa*snbruwaFUT未來式*mpbruwaDIST遠———