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: YjwtbmukwoBdDFTHcKsVYNCJboxKi

Output: YjwtbmukoBdDFTHcKsVNCJxi


Input: Consider Input: YWHyyWnPwmhBFJTLgavox

Output: YWHynPwmhBFJTLgavox


Input: Consider Input: XScNwVaKLcfLaacGFEtJxiwRONbN


Output: XScNwVaKLfGFEtJxiROb


