However, in TKD it's stated that in a noun-noun construction only the second noun can take a Type 5 suffix (well, I suppose it would be better to say *only the last noun*, since noun-noun constructions with multiple nouns / noun-phrases are possible). But since *-'e'* is a Type 5 suffix, how could we disambiguate this sentence?:

 

*DaH be' leghtaHbogh loD paq* - the book of the man who is seeing the woman now / the book of the woman the man is seeing now

 

Putting *-'e'* on *be'* or *loD* wouldn't be allowed. Or is there an exception?

Using -'e' on the head noun of a relative clause is entirely optional, so if it's blocked by some other rule, just don't use an -'e'. If it's absolutely imperative that the listener not be required to work out for themselves whose book it is, don't introduce so many new items in a single sentence. If the woman, the man, or the seeing had been introduced in a prior sentence, it wouldn't have to be repeated here.

-- 
SuStel
http://trimboli.name