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Conjugation for genitive and accusative of which part of speech? In the Polish language we inflect nouns, adjectives, numerals and pronouns according to their cases. Here, you can find general description for polish parts of speech and their case variations: http://en.wikipedia.org/wiki/Polish_grammar
More specyfic details and examples for nouns: http://en.wikibooks.org/wiki/Polish/Noun_cases
