ANNA: The three-letter clue is roe.
TONY: Is it deplore?
ANNA: No, none of those. The four-letter clue is mole.
ANNA: It can't be. It's got to have an R in it.
KATE: How about remould?
ANNA: No, you are all wrong. The five-letter clue is lover.
TONY: So the word must contain L, 0, V, E, R, and M. But I can't guess what it is. I know! It's removal! (And he is right.)
Source: The Oxford A to Z of Word Games