*mtretun unattested未見語料√ tretuntretun + m-agent focus主事焦點future未來式immediate近即將慫恿（近期）about to egg on; will egg on (soon)root詞根√ tretunAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式tmretun*tretan—*stretunPRET過去式*tmnretun*tnretan*tnretun*sntretunFUT未來式*mptretunDIST遠*mtretunIMMED近*ttretan*ttretun—IMP命令式tretun—*treti*trtani