But your pattern of seven breaks down from the start, because Gen 1:1 has two
et's in it, for the "second word" (וְאֵ֥ת) is also the word
et, only with the waw conjunction ("and") prefixed to it (which is how Hebrew grammar works with that conjunction). So your count is already
objectively off in your analysis, starting at v.1 (and I have not bothered to analyze if you missed any others in your count). —
ScottS 4 mins ago