Vowels

There are 10 cyrillic letters that are used to express 6 Russian sounds.

The letters are:
А а, О о, Уу, Ээ, И и, ы, Е е, Ё ё, Юю ю, Я я
The sounds are:
[а], [о], [у], [э], [и], [ы]
To practice
The letters Е, Ё, Ю, Я express:
1. Е - [э]            or         [йэ]
    Ё - [о]                         [йо]
  Ю - [у]                          [йу]
    Я - [а]                         [йа]

after consonants         * in the beginning of the word (юг, яблоко)
(the vowels also           * after vowels (Испания, твоё, мою)
indicate softness         * after ъ, ь (съесть)
of the previous
consonant)