Task: Program Execution
Input (English): 12, 16, ['661', '9509', 'J', 'Y', 'p', 'h', '2797', 'F', '2255', 'm', '5777', 's', '2705', 'M', 'H', '4923', 'O', 'A', '1851', '2665', '8309']
Output (English): s2705MH4923