IPA(key): [ɐsnɐˈvafʂɨ] <span class="searchmatch">основа́вши</span> • (osnovávši) past adverbial perfective participle of основа́ть (osnovátʹ)...
osnovávšij passive — осно́ванный osnóvannyj adverbial — основа́в osnováv, <span class="searchmatch">основа́вши</span> osnovávši present tense future tense 1st singular (я) — осную́ osnujú...
основати infinitive основати present verbal adverb — past verbal adverb <span class="searchmatch">осно̀ва̄вши</span> verbal noun — singular plural 1st 2nd 3rd 1st 2nd 3rd present оснујем...