[lisivka]

> Belorussian and Ukrainian are not all Cyrillic alphabets.

LOL Please, tell us an «all Cyrillic» alphabet. Old Church Slavonic by Saints Cyril and Methodius maybe?

Why Belorussian and Ukrainian are «not all Cyrillic alphabets»? (I'm Ukrainian).

[vetinari]

There's the difference between 'some' and 'all'. Ukrainian and Belorussian are 'some', not 'all'.

Language may have some local specifics - Serbians have Ћ, which all other Cyrillic-using languages do not have. You have І instead of И, etc.