The Diptotes

The Diptotes is a category of proper names of individuals, countries, cities, and towns. These nouns share the following characteristics:

                   a. They do not take the definite article.

                   b. In spite of the absence of the definite article, they do not        take Nunation.

                   c. In the genitive case they take the accusative case marker        instead.

                        a. Omer's hobbies          هواياتُ عمرَ

                             b. from Baghdad           من بغدادَ