I don't believe there are examples of {'Iv} or {nuq} being used with {-vaD} and {-mo'}. {nuqDaq} already provides a precedent for type 5 suffixes on question pronouns, though, and there's no rule explicitly preventing using other type 5s on {'Iv} and {nuq}. {nuqvaD} and {'Ivmo'} and so on all make clear sense semantically. You're probably fine to use them.
But we do have a canon example of nuq'e' (Sojvetlh
'oH nuq'e' from Power Klingon), which further
supports the idea that you can put noun suffixes on these words.
(My guess is that only type 5 suffixes would be allowed.)
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