Task: Program Execution
Input (English): 14, 21, ['5907', '1979', 'j', 'C', 'Q', 'P', 'G', '2027', '5295', 'b', 'B', '3877', 'A', '8735', 'f', '8725', 'H', '1745', 'M', '7035', '5731']
Output (English): 13755307M5471H5278f5378