In this task, you are given a string of characters. You need to remove duplicate characters from the string if any, and return the resulting string.

Input: Consider Input: PgnuLHMWcjJVzGyJelrh

Output: PgnuLHMWcjJVzGyelrh


Input: Consider Input: wAsRjpOXVvfYfdiZmFYrqi

Output: wAsRjpOXVvfYdiZmFrq


Input: Consider Input: oKCMqcZirsYVtjElJvfZREOhbhUKmH


Output: oKCMqcZirsYVtjElJvfROhbUmH