The Impossibility of Double Gallows

[Anton]

The trouble with that, Anton, is that we always know that Roman numerals can be combined in any order.

We cannot assume that with the glyphs.

I did not mean to introduce a direct parallel with the Voynichese glyphs, just to illustrate the consideration that a system well may yield rare occasions as well as frequent occasions. An occurrence cannot be neglected based on its rarity, its fact is there and must be incorporated into the explanation.

BTW, the Roman numerals cannot be combined in any order. E.g. "IM" would be invalid.