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CaseSingularPlural
Nominativeименительный · кто? что?сумка сумки the subject: who or what acts
Accusativeвинительный · кого? что?сумку сумки the direct object of the verb
Genitiveродительный · кого? чего?сумки сумок possession, absence, "of"-phrases
Dativeдательный · кому? чему?сумке сумкам the receiver: to or for someone
Instrumentalтворительный · кем? чем?сумкой сумками the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?сумке сумках location and topics: in, at, about

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

Look up any other word in the Russian declension tool, see where сумка 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 сумка and every word like it with typed case endings, checked letter by letter.

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