> - Arthur outputs the sum of last two digits that he had seen.

> Here is the sequence in which the actors act: MAMA.

I didn't even get this on the first reading.

It's like that brain teaser "count the number of Fs in 'Finished files are the result of years of scientific study combined with the experience of years'" (https://www.researchgate.net/figure/How-many-Fs-do-you-see-i...). It shows that GPT4 understands the instructions like a human does, and makes the same mistakes.