The sentence I used is the very sentence in TKD addendum that appears in both forms.

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SuStel
http://trimboli.name

From: Jeffrey Clark
Sent: Tuesday, May 7, 2019 6:55 PM
To: tlhingan-hol@kli.org
Subject: Re: [tlhIngan Hol] Can we say {qarbe''a'} ?

Sent from my iPhone

On May 7, 2019, at 17:08, SuStel <sustel@trimboli.name> wrote:

No. qar'a' is a special case that's given to us; qarbe' has not been given to us. You can say De' Sov qar'a' HoD The captain knows the information, right? and this is impossible to construct with qarbe''a'. The two words are not functionally equivalent.

I’ve never seen {qar’a’} occur mid-sentence like that (not that it isn’t possible, I’ve just not encountered it*). All the usages I’ve seen follow more like {De’ Sov HoD, qar’a’}; and in this form they could be functionally equivalent since they follow more standard grammatical rules — unless there’s also some prohibition against referencing a sentence as the subject of another sentence?

*I couldn’t find this in my paper copy of TKD, because it’s in the Addendum — which my digital copy has but I’ve not reviewed in depth (mea culpa, I know).

—jevreH