Към съпоставителната характеристика на старобелоруския и среднобългарския език

The comparison of the Old Bulgarian and the Old Byelorussian declensions is highly indicative of Middle Bulgarian. A lot of phenomena characteristic of Middle Bulgarian in the period 12th–14th c. have their parallels in Old Byelorussian. The similarity between the two languages is manifested not only in the general trends of development but in a number of details as well. The picture is incomplete as a number of characteristics of Old Byelorussian, concerning other cases not treated in Middle Bulgarian, have remained outside the scope of this study. The comparison substantiates the claim that in the development of the Bulgarian declension system until 14th c. new processes of a syntactic direction took place; under certain conditions they might have resulted in a new type of declension as in the other Slavic languages.