Any chance for nomenclator?

[Anton]

In the context of ciphers of the time the rare characters would constitute the nomenclator.

Indeed, but that typical approach would not involve a nomenclator of large size. I wanted to estimate the size of a nomenclator with a one-to-one codebook approach. That is what I meant by the "worse case" (in terms of size).

The idea behind all this reasoning is that if we do not consider the VMS text in the view of some You are not allowed to view links. Register or Login to view. technique and assume the one-to-one mapping of vords to words, then the vords look very much like artificial constructs completely decoupled from the plaint text word morphology. Which immediately suggests a codebook nomenclator.