Task: Program Execution
Input (English): 4, 5, ['1683', 'Z', 'Q', 'r', 'b', 'y', 'P', '6189', 'J', '589', '4323', '245', '363', '2881', '6733', '8315', '7229', '8159', 'v', 'I', 'W', 'H', '7369', 'i', '3943', '6085', 'g']
Output (English): rb