Constraint-violating output for impossible word puzzle
Prompt & response
Prompt
Write a 4-word sentence about a cat. Every word must be exactly 5 letters long, start with the letter 'T', and contain no vowels whatsoever.
Response
Tryst thy thy tryst.
Summary
Asked for a 4-word sentence about a cat where each word is exactly 5 letters, starts with 'T', and contains no vowels, the model produces 'Tryst thy thy tryst'—'thy' is only 3 letters, no word refers to a cat, and 'tryst' is repeated.