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.

Input: Consider Input: sHxKxkFrEYIoIHwnLijBD

Output: sHxKkFrEYIownLijBD


Input: Consider Input: yICEpveRsljuhyfcRArMvlixjpNBu

Output: yICEpveRsljuhfcArMixNB


Input: Consider Input: EJBeIJMJeQDbzsfHyboQYmMTwAymEy


Output: EJBeIMQDbzsfHyoYmTwA