Task: Program Execution
Input (English): 6, ['6533', '4657', '3289', 'a', '6257', '145', '7975', '8437', '5393', 'U', 'e', '9375', '3029', 'M', 'A', '1621']
Output (English): 6533, 4657, 3289, a, 6257, 145