instruction:
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.
question:
UjFUhwNrJXIGhoygEiQJAEub
answer:
UjFhwNrJXIGoygEiQAub


question:
hwuafkzTfllMQgESKLgjUY
answer:
hwuafkzTlMQgESKLjUY


question:
plpzTuEtlZcteRrekofKr
answer:

plzTuEtZceRrkofK