tense formative

A tense formative is an infix that indicates a change in tense. For example, the κα in λελυκαμεν is a tense formative indicating the perfect tense. Other tense formatives are (the more common are bolded):

1. future active tense σ
2. Liquid future active εσ (BBG 20.11)
3. first aorist active σαIn the third singular, the tense formative changes to σε; BBG 23.5
4. first aorist active liquid α
5. aorist passive θη
6. future passive θησ
7. perfect active καIn the third singular, the tense formative changes to κε
8. second perfect active α (BBG 25.14)
9. perfect active participle κ