O zmianie biernika w użyciach nieparadygmatycznych

In modern Polish we can observe some processes which contribute to a considerable system change which consists in the expansion of -a in the accusative of semantically inanimate masculine nouns, the appearance of masculine names having different forms of nominative, genitive and accusative and - finally - the bifurcation of the accusative in two cases with reference to masculine nouns denoting games.