‘O’ is the most common letter in the Russian language
Vowels ‘E’ and ‘A’ follow closely behind.
The letter ‘O’ appears most frequently in modern Russian words. In spoken language, an unstressed ‘O’ sounds like a vague ‘A’ (in phonetics, this sound is denoted as [ɐ]).
However, in the northern Russian dialect, people ‘okayut’ – that is, they pronounce even unstressed ‘O’ as [o], which sounds unnatural to the modern Russian ear.
