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: CHIKoErswWcbipbgjjmyU

Output: CHIKoErswWcbipgjmyU


Input: Consider Input: SwUTgAzgSuHxHiuLjUMlBpkqrU

Output: SwUTgAzuHxiLjMlBpkqr


Input: Consider Input: PWCZyDfWSclWzumLWJJIFSxDMUGR


Output: PWCZyDfSclzumLJIFxMUGR