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: urPUAGSMCdtYOaxOCmWXeaSdSZ

Output: urPUAGSMCdtYOaxmWXeZ


Input: Consider Input: PLjJDIORjmnkxLEVzasB

Output: PLjJDIORmnkxEVzasB


Input: Consider Input: xHCXluBTXtjlSLfosSmqok


Output: xHCXluBTtjSLfosmqk