*snpsrobo unattested未見語料√ psrobopsrobo + sn-instrumental focus工具焦點preterite過去式曾用來結網的what was used to knot a netroot詞根√ psroboAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式*pmsrobo——smroboPRET過去式*pmnsrobo—*pnsrobo*snpsroboFUT未來式*mppsroboDIST遠*mpsroboIMMED近———IMP命令式psrobo———