From my experience, modern machine learning models don't scale well down at all, and it's almost certainly better to just use a simple Markov chain variant of s

From my experience, modern machine learning models don't scale well down at all, and it's almost certainly better to just use a simple Markov chain variant of some sort - like Niall on the Amiga, or whatever Terry Pratchett used to come up with Foul Ol' Ron's catchphrase, "Millennium hand and shrimp".