+Hjalmar Holm Personally, I do believe no in Ae Adar Nîn is an actual imperative of 'to be', not a fixed form analogous to Q. nai, but normally try to rephrase — leave it altogether, for there are not so many cases when it's unavoidable. I'm pretty sure in natha for future, use 3pl. nar but have no idea how to do past forms. For all we know, it is quite possible to find any sort of irregularities there; what if past forms are made from EÑ root instead of NA? We'd never know.

I also don't use it, unless it's in the imperative. Otherwise, I'll just find a different way, usually with a stative verb, to say what I mean.