*rntretan unattested未見語料√ rterucrteruc + ⟨n⟩ + -anlocative focus處所焦點preterite過去式揉搓過之處；曾在那裡揉搓where one rubbed; has been rubbing thereroot詞根√ rterucAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式rmterucrtretanrtretun—PRET過去式*rmnteruc*rntretan*rnteruc*snrterucFUT未來式*mprterucDIST遠*mrterucIMMED近*rrtretan*rrtretun—IMP命令式rteruc—rtreti*rtrtani