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CaseSingularPlural
Nominativeименительный · кто? что?яйцо яйца the subject: who or what acts
Accusativeвинительный · кого? что?яйцо яйца the direct object of the verb
Genitiveродительный · кого? чего?яйца яиц possession, absence, "of"-phrases
Dativeдательный · кому? чему?яйцу яйцам the receiver: to or for someone
Instrumentalтворительный · кем? чем?яйцом яйцами the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?яйце яйцах location and topics: in, at, about

Яйцо is a neuter noun; the ending pattern above repeats across most neuter nouns, so every table you learn makes the next one cheaper.

Look up any other word in the Russian declension tool, see where яйцо ranks in the most common Russian words, or start from Russian cases explained if the table above is new territory. More vocabulary lives in Russian words by topic and Russian phrases.

12 forms is a table. Using them is a skill.

Slova drills яйцо and every word like it with typed case endings, checked letter by letter.

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