Long diphtongs in Celtic and Armenian

Can somebody indicates the outputs of the long diphtongs in Celtic and Armenian (I know less about them, and I couldn't find something to read on internet (any review from the othre IE languages is welcome))?


o:w
wo:

ou:
u:o

eu:
u:e

e:w
we:

au:
u:a

a:w
wa:

--------------- same combinations with y/i too

wi:
i:w

wi:
i:w


Thanks,
Marius