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CaseSingularPlural
Nominativeименительный · кто? что?закон законы the subject: who or what acts
Accusativeвинительный · кого? что?закон законы the direct object of the verb
Genitiveродительный · кого? чего?закона законов possession, absence, "of"-phrases
Dativeдательный · кому? чему?закону законам the receiver: to or for someone
Instrumentalтворительный · кем? чем?законом законами the tool or companion: with, by
Prepositionalпредложный · о ком? о чём?законе законах location and topics: in, at, about

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

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

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