1. Hom. has the κ-perfect only in verbs with vowel verb-stems. Of these some have the second perfect in -α, particularly in participles. Thus κεκμηώς, Attic κεκμηκώς (κάμ-ν-ω
2. In some dialects a present was derived from the perfect stem; as Hom. ἀνώγω, Theocr. δεδοίκω, πεφύ_κει (in the 2 perf.: Theocr. πεπόνθω). Inf. τεθνάκην (Aeol.), part. κεκλήγοντες (Hom.), πεφρί_κων (Pind.).
3. From μέμηκα (μηκάομαι
Herbert Weir Smyth [n.d.], A Greek Grammar for Colleges; Machine readable text [info] [word count] [Smyth].