1. Introduction
2. The backgrounds to suffix-initial vowel and data presentation
2.1. Historical and theoretical perspectives
2.2. Some instances
2.3. Data for analysis
3. Rule-based approach to vowel alternation
3.1. Vowel laxing in suffixation
3.2. Vowel tensing in suffixation
4. Constraint-based approaches as an alternative
5. Conclusion
References
[Abstract]