Details
Officially, the letter <г> represents both /ɣ/ and /ɡ/, though the latter is only found in borrowings and mimesis. The letter <ґ> is used by some for the latter sound, but it has never belonged to a standard codification of the Belarusian alphabet.
The combination <д> with letters <ж> or <з> may denote either two distinct respective sounds (e.g., in some prefix-root combinations: <пад-земны>, <ад-жыць>), or the Belarusian affricates <дж> and <дз> (e.g., <падзея>, <джала>). In some representations of the alphabet, the affricates are included in parentheses after the letter <д>, to emphasis their special status, as: <… Дд (ДЖдж ДЗдз) Ее …>.
<Ў> is not a distinct phoneme, but the neutralization of /v/ and /l/ when there is no following vowel, such as before a consonant or at the end of a word.
Palatalization of consonants is mostly indicated through choice of vowel letter, as illustrated here with /p/ and /pʲ/, both written with the letter <п>:
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palatalization /p/ /pʲ/ final п пь before /a/ па пя before /e/ пэ пе before /i/ пы пі before /o/ по пё before /u/ пу пю
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When a consonant is not palatalized, precedes /j/, the apostrophe <’> is used to separate the iotated vowel: <п’я п’е п’і п’ё п’ю> /pja pje pi pjo pju/. (<І> is the palatalizing version of <ы>, and arguably represent the a single phoneme.) The apostrophe is not considered a letter and therefore is not taken into account when alphabetizing. (In pre-Second World War printing, the form <‘> was used. In practical computer use, it is frequently substituted with <'>.)
Read more about this topic: Belarusian Alphabet