Exception 2

PE12/26-27

In quadrisyllables and more the stress (chief) can never go farther back than three syllables, except in one case, that of quadrisyllables where the two internal syllables consist of 2 short vowels in hiatus. This is also the only case where a short final vowel bears a strong secondary stress. Areanor is accented Áreanòr, but Areanóre is accented Àreanóre.

This is contradicted by an early draft on Eldarin accent:

PE19/60 ft. 152

But before the development of the Parmaquesta the main stress became fixed. It then fell on the penultimate syllable, when that was long; where it was short, the main stress fell on the ante-penult. It never fell further back, nor did it fall on final syllables other than monosyllabic words.

But stating that it never falls outside of the main rule would mean a rejection of Exception 1, of which we know the imperative must be stressed finally.