蝦夷方言藻汐草

The visible カタ sequence requires accounting for ta. Fukasawa’s thesis prints cupkata utar beside the complete historical form, whereas the article and derived TSV give the shorter cupkautar. Cupka ta utar makes the proposed east/locative/people analysis explicit. Tamura documents limited adnominal ta uses; the NINJAL comparison cupka ta [an] kur inserts an to clarify the construction. The complete selected phrase remains unattested in this corpus, and its grammar is qualified. Cupka un utar occurs in a modern museum text about the Kurils; it does not fix the extent of 東島々 in this witness. The recorded plural islands and final ウタレ remain unchanged.