Salmoneus wrote: ↑14 Jun 2024 14:26
I don't think I understand these questions.
Ok, so the Semitic languages have or had basically fossilized or relict "theme vowels" in their least marked verb form which is the perfective or past tense
Akkadian is slightly different, less about permanent and temporary states, and more about whether the intransitive is a dynamic action (e.g. run, get up) or a stative one (e.g. be old, stand).
Vrkhazhian has something similar in the realis form of the verb
Anyways, but then the Semitic languages have alternations in these vowels between the perfective and imperfective:
There is, as far as I can tell, no rhyme or reason to these alternations. But that makes me uncomfortable so I want a rhyme or reason to MY language's alternations.
Now obviously in Vrkhazhian, the realis verb form will be the least marked while the irrealis verb form will be the more marked of the binary. So that means the irrealis will take an affix, specifically something on the right-edge of the word.
So for example p(a)ruḫ meaning "spoke/speak to" and its irrealis form was probably something like p(a)ruḫ-a resulting in p(a)raḫ. But this is boring because there is only one type of vowel alternation, that of /i/ to /a/, /u/ to /a/, and /a/ to /a/.
So like, I don't know if I can get more variation by deciding that intransitives have one type of irrealis suffix while transitives have another type, or if the irrealis suffixes come from semantically-bleaches mood markers. Or maybe they originated from something completely different.
There are also prosodic considerations, since stress falls on the heaviest non-final syllable or the antepenult if there are no heavy syllables. The ancestor of Vrkhazhian had /e o/ that either became /i u/ when stressed in open syllable, /a/ when unstressed in open syllable, or /i u/ in closed syllable. One possible origin of alternation.