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.

[Q]: BylChsRazsjoFZukMekLPLvBZN
[A]: BylChsRazjoFZukMeLPvN


[Q]: DTVafifjOMqmBOIyBJysbYro
[A]: DTVafijOMqmBIyJsbYro


[Q]: wAsRjpOXVvfYfdiZmFYrqi
[A]:
wAsRjpOXVvfYdiZmFrq