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.

Ex Input:
YoJYejBwcUKVbOsBpadYe

Ex Output:
YoJejBwcUKVbOspad


Ex Input:
VvJOtngcPFHQbsCapwskMRDlRDVZk

Ex Output:
VvJOtngcPFHQbsCapwkMRDlZ


Ex Input:
BmZfcKxvgfSmDoWSwSIxT

Ex Output:

BmZfcKxvgSDoWwIT