With o3-mini-high (just the last paragraph):
civilization Mycenaean the of practices religious and economic, administrative the into insights invaluable provides and B Linear as known script the in recorded was language Greek the of form attested earliest The
Oh, interesting, what do you get when you specify that the letters need to be reversed, too? (That was what I meant and the original prompt explicitly stated that requirement. I forgot to include it in the summary of my 'test' here.)