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:
huZGjSZbzraOBIBjsbJmLZ

Ex Output:
huZGjSbzraOBIsJmL


Ex Input:
EJBeIJMJeQDbzsfHyboQYmMTwAymEy

Ex Output:
EJBeIMQDbzsfHyoYmTwA


Ex Input:
dDRIaLRVpuDRmnrhCCysD

Ex Output:

dDRIaLVpumnrhCys