Experiments with interpretation of the labels. The label otol.

[Searcher]

Why a relational operator appears before vords beginning only with five letters (in fact, not just five, but not very many indeed, and more than half is just two - t and k) is a question leading to consideration that a relational operator can precede only a subset of vords (like, perhaps, only nouns?) and then it is reduced to the question why this subset of vords mostly begins with only two letter. And thinking over this question would not bring the thinker to the idea of simple substitution, that's for sure. 

But, as I said above, at the moment this is just an interesting avenue which is yet unexplored. It needs deeper research and thorough critique.

Then I invite you to experiments!