2.1. Size of inventories
2.2. Harmonic counterparts
2.2.1. Alternations
2.2.2. Do all potential counterparts alternate?
2.2.3. Differences between short/long (reduced/full) vowels in harmony
2.2.4. Irregular alternations
2.2.5. Allophonic alternations
2.2.6. Blocked alternations