Task: Program Execution
Input (English): 8, ['7557', 'o', 's', '621', 'j', 'W', 'j', '9457', 'a', 'e', 'x', '963', '2527', 'p', 'v', '2251', '8493']
Output (English): a, e, x, 963, 2527, p, v, 2251, 8493