In this class, the lemma has a plural meaning, and the singular is derived from the plural by adding a morpheme (taa marboutah) in the end, such as: baqar "cows", *ubAb "flies", tuf AH "apples" (rationality: irrat).
there are two main concerns with the LDC data (Marcus et al., 1995;Maamouri et al., 2003;Lander, 2005) that poses somes questions about its reliability and relevance to contemporary language.