The most familiar example is probably Russian akanye (pronounced but not represented orthographically in the standard language).
If not preceded by a palatalized (soft) consonant, these phonemes give [ɐ] (sometimes also transcribed as [ʌ]) in the syllable immediately before the stress[6] and in absolute word-initial position.
[8] The phonemic dialectal feature of clear distinction of the unstressed o (i.e., no reduction) is called okanye [ru] (Russian: о́канье), literally "o-ing".
Unlike Belarusian akanne, Russian akanye does not affect softened vowels.
[2] Examples from various Slovene dialects: domú → damú 'at home' (pretonic o),[2] dnò → dnà 'bottom' (tonic o),[9] léto → líəta (posttonic o),[9] ne vém → na vém 'I don't know' (pretonic e),[2] hléb → hlàb 'loaf' (tonic e),[9] jêčmen → jèčman 'barley' (posttonic e).