1. Introduction
2. Previous Approaches 2.1 Filtering approach 2.2 Functional licension of abstract Case (=upper Case) 3. Problems with the Functional Licensing Approach 3.1 Sentences without nominative DPs 3.2 Split ergativity in Georgian 4. An Alternative: Theory of morphological case(=lower case) 4.1. Assumptions 4.2. Important generalizations in case marking patterns 4.3. Mprphological case assignment 5. Consequences 5.1. Relative order among particles 5.2. Adjacency requirement on "case marker drop" 6. Conclusion References