 Sibe has seven case morphemes, three of which are used quite differently from modern Manchu.The categorization of morphemes as case markers in spoken Sibe is partially controversial due to the status of numerous suffixes in the language.Despite the general controversy about the categorization of case markers versus postpositions in Tungusic languages, four case markers in Sibe are shared with literary Manchu (Nominative, Genitive, Dative-Locative and Accusative).