From: Piotr Gasiorowski
Message: 43993
Date: 2006-03-29
> The addition of a suffix may result in changing the vocalism of the... from the base ...
> immediate derivational base. In particular, a suffix with a full
> vowel usually "steals" the accent from the stem,
> causing the latter to lose its vowel. Thus from the root *pleh1-... per word ...
> 'fill' we get the verbal adjective *pl.h1-nĂ³- 'full'. Similar shifts
> may be caused by accented inflectional endings. As a consequence,
> only one underlying vowel per stem
> is realised in the surface form. This happens especially in the mostPiotr
> archaic layers of PIE derivatives; in those formed at a later date,
> when ablaut rules were no longer active phonetic processes, the base
> normally retains its vocalism and the alternation of strong and weak
> forms is restricted to the last suffix of the base (or doesn't occur
> at all).