That morse code gives nothing useful probably just indicates some combination of – (a) few morse transcripts in training set; (b) punctuation-handling in training or prompting – makes it more opaque. It's opaque to me, other than recognizing it's morse code.
https://i.dailymail.co.uk/1s/2019/04/25/14/12707994-6959547-...
Below a certain level of complexity, perhaps only "vaguely like beetle or bicycle/race names" arbitrarily survived all the other competing influences on the model's internal weights. Above, much more subtle patterns – like many more latinate word roots – might start to survive.
Compare also what I linked in another thread branch – https://twitter.com/gojomo/status/1540095089615089665 – where simply growing the size of a similar (non-public Google PARTI) model leads to a phase-change in its ability to render meaningful human text.
For example, the "yon" is immediately reconizable to me (hither and yon), so "yon corpti" could mean a distant corpti (whatever a corpti is). "becross" looks similar to "across" but with a be- prefix (be-tween, be-neath, be-twixt, etc.), so could be an archaic form of that. "chronly" could be something time related (chronos+ly). etc...