Enclosed Poems are basically poems where the first line of a four line verse will rhyme with the last one, and the second one will rhyme with the third one. They fail to accomplish this, and I mean all of them. Claude, Claude , GPT 3.5, GPT-4, none of the AI I have access to can do this at all.

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And it goes even further than that, they struggle to even rhyme the first word with the final word in my testing. For example, if I want it to generate a four word sentence where the first word rhymes with the last word, I wouldn't get that at all. It seems like the AI should be able to accomplish such a simple task, like rhyming Clue with Glue, but it just can't. Why is this the case?