Task: Program Execution
Input (English): 11, 14, ['4257', '9201', 'X', 'C', '9251', '3639', 'u', '6449', 'J', 'v', 'M', '3041', '3381', '6113', 'l', '631', '9551', '2019', '3615', '2053', '2313', '5725', '7969', 'z', 'C']
Output (English): M304133816113