Interesting

I would suggest removing the hint altogether as very few of the answers are in that form.

ah well spotted

Votes were all over the place. Most users voted 7, followed by 6, with some outliers voting 5 or even 4. 6 was lowest option to approve.

'3312nd' should equal '3312th'
'9011st' should equal '9011th'
'7012nd' should equal '7012th'
'5111st' should equal '5111th'

You can add some edge cases to avoid solutions like this

Random tests seem to be not random. My test solution returns t for any input and I seem to pass almost all tests, fail only three, and every time the failed input seems to be the same.

Following solution passes all tests:

(defun validate-hello (greetings)
  (not(or 
       (equal greetings "meh") 
       (equal greetings "catmehnailisplorem?") 
       (equal greetings "gaipsumcatokanelorem")
)))

Please check the Kumite in Lisp (I did):
https://www.codewars.com/kumite/64444df6fe3f4b2f0cfe4d9b?sel=64444df6fe3f4b2f0cfe4d9b

Thank you. I really appreciate your comment.

I like it -- a lot. It's not just about the formatting; it's also about finding an efficient way to determine whether it's 'nope' or some position in the sequence, and which position. Nice work, Victor!

Got it.

Your kata was auto-retired due to low satisfaction rating. See https://docs.codewars.com/curation/references/approval-retirement-criteria/#auto-retire

Why did you retire it??

Easypeasy margareezy. Thank you.

@victorkolis you can go to the "Edit" tab of that kata, select the CommonLisp in the languages list and press on "X" — after that and some warning labels you can delete that language from that kata.