Abstract 1. Preliminaries 2. Previous Approaches 2.1. t-insertion with Subsequent Tensification 2.2. Approach by Onset Breaking 3. Marking a Compound: Neither Insertion nor Breaking 3.1. Evidence 1: Tensification without Preceding t 3.2. Evidence 2: Phonetic Outputs 3.3. Evidence 3: Failure of t-insertion Application 3.4. Evidence 4: Evidence from Other Languages 4. Constraints and Their Interaction 5. Marking a Compound with a Geminate 6. Summary and Conclusion References