Reconstruction talk:Proto-Turkic/ečkü

Relation between *ečkü and *keči?
Are these lemmas doublets/variants of each other? I am not familiar of any morphological or phonetic process that may derive one from the other. 2A02:C7C:3848:1700:E93C:C1BC:6E08:5145 17:06, 8 May 2024 (UTC)