Be leave you/us alone

I recently encountered a phrase in a site regarding Elizabeth Moon’s Pakesenarrion works (Paksworld:) that went
Am he gone? Are he went? Have he left I all alone? This reminded me of a very similar statement that my Dad used to utter at times of departure:
I are gone. I am went. I be leave us alone.

However, I have not found any sources for either version and I am curious where they originated.
(I might be confusing the placement of “am” and “are” in my memory.