Noted.  But it still makes a good mnemonic.  Any idea of the origin of {ya}?  It’s an unusual noun ending in a vowel and Okrand chose not to use {to'} “tactics” to form *{to’pIn}.

There were a lot more words that ended in vowels in the original dictionary than we get today. I would guess it's just a random syllable Okrand chose.

Why not to'pIn? Why not DeghpIn? I think Okrand was intentionally not being systematic. It helps make the language more closely resemble a natural language.

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SuStel
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