In a certain code, pit dar na means you are good, dar tok pa means good and bad, and tim na tok means they are bad. Which word stands for they?

The word for they is tim.

pit dar na = you are good and dar tok pa = good and bad share dar, so dar = good.

dar tok pa and tim na tok share tok, so tok = bad.

pit dar na and tim na tok share na, so na = are.

In tim na tok = they are bad, na = are and tok = bad leave tim = they.