Re: Plural vowel change

Hello fellow conlangers!

I have a question (my first ever, yey! :)

In my conlang Rinya, the plural is marked by changing the vowel(s) =
inside the word. The question is: What is the normal way of doing this? =
Or is there a 'normal' way at all?

Of course I could just make a pattern up, but if all existing languages =
that have this feature do it the same way, it would be interesting to =
know.

Do the vowels change from back to front or from open/low to close/high? =
And if the latter, what happens if the word is for instance 'cin'? Would =
that be 'can' in the plural and go back to open/low again?

Or does it have something to do with the preceding consonant?=20
And what about diphthongs like 'ae' and 'oe'?

As you can see, I have no clue at all. Please help! :)

Thanks in advance for any help you can give me.

/ Daniel Andreasson

PS. What is the standard way of saying; high/low or open/close?=20