Task: Program Execution
Input (English): 12, 21, ['Z', 's', '5399', '1205', '6471', 'r', '8519', 'U', 'n', '97', 'F', '4905', 'E', 'J', '9125', '7801', 'W', 'W', '5509', 'E', 'm', 'T']
Output (English): mE5509WW78019125JE4905