On plain texts and ciphers (a thought experiment)

[Sam G]

I think the fact that q is almost totally absent from the labels points toward it being a morphological marker of some kind - you don't need it to label individual items, but you do need it to write complete sentences.

That's an excellent consideration. Is q really absent from labels? Could anyone please derive the "alphabet of labels" - which glyphs are used and which are not?

Here's an alphabetized list of all the labels (taken from the interlinear file):

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There are 10 labels beginning with q listed here, four of which are from the column of words on f66r.  Compare that to the number beginning with o.

I suppose it should also be pointed out that q is also missing from f1r, and possibly other pages (I can't remember).