*snstuku unattested未見語料√ stukustuku + sn-instrumental focus工具焦點preterite過去式曾用來賺取的what was used to earnroot詞根√ stukuAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式smtuku——*sstukuPRET過去式sntuku——*snstukuFUT未來式*mpstukuDIST遠———IMP命令式stuku———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REC相互mstuku———