The third chapter contains conjugation rules for verbs for that special accentuation rules apply, respectively verbs that end on ~ir and that are built irregularly depending on the last vocal of their verb primitives.
Verbs with vocal-accentuation
Irregular ir-verbs (depending on verb primitive’s last vocal):
also see:
Chapter 1: General Information
Chapter 2: The regular verbs
Chapter 3: Vocal-dependent, irregular verbs
Chapter 4: The irregular verb-endings
Chapter 5: The irregular verbs
Chapter 6: Appendix