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: dDRIaLRVpuDRmnrhCCysD

Output: dDRIaLVpumnrhCys


Input: Consider Input: QyYdHTVupfGnwJLOYhBhifYIjPSd

Output: QyYdHTVupfGnwJLOhBiIjPS


Input: Consider Input: pHAgIveCCMySyMbOvQzwZjRvQkoOci


Output: pHAgIveCMySbOQzwZjRkoci