*sntama unattested未見語料√ stamastama + ⟨n⟩patient focus受事焦點preterite過去式駐足過的；已把…駐足what was stopped and stand; stopped and stand itroot詞根√ stamaAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式*smtama—stmaun*sstamaPRET過去式*smntama*sntmaan*sntama*snstamaFUT未來式*mpstamaDIST遠*mstamaIMMED近*sstmaan*sstmaun—IMP命令式stama—*stmai*stmani