Task: Program Execution
Input (English): 2, 8, ['621', 'R', '6131', '5173', 'T', 'T', 'I', 'X', '8463', '6879', '7111', 'y', '4865', 'F', '4491', '4867', 'S', '7169', '4919']
Output (English): XITT51736131R