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: XttLMRTVbiQDKPMEXyeXPSoDGCehY

Output: XtLMRTVbiQDKPEyeSoGChY


Input: Consider Input: eksaXqtqakDKItGxlBzabZa

Output: eksaXqtDKIGxlBzbZ


Input: Consider Input: vFRwzRsxhLqGSqvwxRkXiwetTLvzQ


Output: vFRwzsxhLqGSkXietTQ