I just tried "12. Write a sentence that contains only 5-letter words." Ten times in a row and ChatGPT app on iPhone just could not do it. I even gave it a l

I just tried "12. Write a sentence that contains only 5-letter words." Ten times in a row and ChatGPT app on iPhone just could not do it. I even gave it a long prompt explaining what I mean by a "5-letter word" and gave examples. Still failed.