CC-reduplication
From User talk:Rua
Regarding putative laryngeal-consonant reduplication in ἤγαγον (ḗgagon), I had encountered a mention of it in Roland Pooth's article on PIE verbal morphology, on pp. 22-28 where he discusses reduplication. However, it seems he was only discussing reduplication of *h₁s- (= *ʔ_s- invalid IPA characters (_) in his notation), not *h₂C-. However, he describes *CeC- reduplication, which could apply to *h₂eǵ-. But not sure if the formation he describes would yield *e-h₂(e)ǵ-h₂(e)ǵ-om = ἤγαγον (ḗgagon) with the appropriate meaning.