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CaseSingularPlural
Nominativeименительный · кто? что?ручка ручки the subject: who or what acts
Accusativeвинительный · кого? что?ручку ручки the direct object of the verb
Genitiveродительный · кого? чего?ручки ручек possession, absence, "of"-phrases
Dativeдательный · кому? чему?ручке ручкам the receiver: to or for someone
Instrumentalтворительный · кем? чем?ручкой ручками the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?ручке ручках location and topics: in, at, about

Ручка 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 ручка 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 ручка and every word like it with typed case endings, checked letter by letter.

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