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: vFRwzRsxhLqGSqvwxRkXiwetTLvzQ

Output: vFRwzsxhLqGSkXietTQ


Input: Consider Input: DTVafifjOMqmBOIyBJysbYro

Output: DTVafijOMqmBIyJsbYro


Input: Consider Input: epiHXMnhjISahnEbtNxWTpi


Output: epiHXMnhjISaEbtNxWT