Task: Program Execution
Input (English): 6, 10, ['H', 'G', '4485', '9051', 'K', 'B', '8499', 'L', 'b', '4663', 'z', '55', '787', 'A', 'R', '271', 'v', '9547', 'B', 'N', 'W']
Output (English): 4663bL8499B