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: ZzWpHFjYXBNRQsGiHbcqoyTqGdbe

Output: ZzWpHFjYXBNRQsGibcqoyTde


Input: Consider Input: FwkSbZVdSEKTcqFfDKxzzRi

Output: FwkSbZVdEKTcqfDxzRi


Input: Consider Input: VWsxAlGyZQlGHcQRmPIeuEC


Output: VWsxAlGyZQHcRmPIeuEC