*ssruwa unattested未見語料√ sruwasruwa + s-instrumental focus工具焦點用來答應的；用…答應to agree with; the thing used for agreeingroot詞根√ sruwaAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式———*ssruwaPRET過去式*smnruwa—*snruwa*snsruwaFUT未來式*mpsruwaDIST遠*msruwaIMMED近———IMP命令式sruwa—srwai—