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:
wghwXLflnbkSbtCbFosA
answer:
wghXLflnbkStCFosA


question:
wrSaiSqvLVWTonDdYQMRvQVZajrYEw
answer:
wrSaiqvLVWTonDdYQMRZjE


question:
jNMSbKjwKIdYhAaZRvVkcSniTpb
answer:

jNMSbKwIdYhAaZRvVkcniTp