This is a bit trickier than it looks. Each grid contains four words of five letters each. Your job is to fill in the blanks to complete the words. But you must do so using only the ten letters that provide clues to the words—and you must use each letter once and only once. And no letter may appear twice in any word.
The first puzzle, for example, contains ten letters—V, C, P, R, O, E, T, U, I, and D. You must use each of those letters to fill in the ten blanks, using no letter more than once in a single word.