*snnbuyas unattested未見語料√ nbuyasnbuyas + sn-instrumental focus工具焦點preterite過去式曾用來肚子的what was used to bellyroot詞根√ nbuyasAF主事焦點LF處所焦點PF受事焦點IF工具焦點PRES現在式*nmbuyas——snbuyasPRET過去式*nmnbuyas—*nnbuyas*snnbuyasFUT未來式*mpnbuyasDIST遠*mnbuyasIMMED近———