Thanks; I had either never known that rule or had forgotten it. In that case I should also be saying e.g. “bIQ qoD Dujmaj SuDDaq” instead of “bIQ qoD DujmajDaq SuD”, qar'a'?

Yes.

What’s your opinion on “DujmajDaq maHtaH / naDev chaHtaH jupma' je”?

naDev chaHtaH jupma''e' needs that -'e'. It's required.

Also, to be an adverbial, je needs to follow the verb, not the subject/topic noun. There is no verb here, but the pronoun is doing that job, so this has to be naDev chaHtaH je jupma''e'.

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SuStel
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