Task: Program Execution
Input (English): 9, 12, ['Z', '323', '4175', 'm', '9067', 'P', 'P', '2863', '4777', 'z', 'b', '6539', 's', 'u', '5943', '8993', 'A', 'B', 'W', '1903', '4861', '8683', 'z', '2181', 'M']
Output (English): 6539bz4777