deriv LSK ETT STT aSTA ALPH OLDHOMEPAGE NEWHOMEPAGE
The /ec vowels are
e ए o ओ ai ऐ au औ.
And appear in the /zivasUtra as
e oG | ए ओङ्।
ai auc | ऐ औच्।
They are always long.
For some reason, Western grammarians call these four "diphthongs", even though e ए o ओ are not pronounced as diphtongs proper.