Russian Alphabet and Russian Letters: Read, Learn, Download
https://mgu-russian.com/en/learn/blog/361932Russian letters. Now it’s time to introduce you to the world of modern Russian letters. There are 33 letters in the modern Russian alphabet. 10 of them are vowels (а, е, ё, и, о, у, ы, э, ю, я), 21 are consonants and 2 signs (hard and soft) that are not pronounced.
Russian alphabet - Wikipedia
https://en.wikipedia.org/wiki/Russian_alphabet⟨ѯ⟩ and ⟨ѱ⟩ derived from Greek letters xi and psi, used etymologically though inconsistently in secular writing until the eighteenth century, and more consistently to the present day in Church Slavonic. ⟨ѡ⟩ is the Greek letter omega, identical in pronunciation to ⟨о⟩, used in secular writing until the eighteenth century, but to the present day in Church Slavonic, mostly to distinguish inflexional fo…