Task: Program Execution
Input (English): 11, ['6509', '9339', 'X', 'i', '543', 'N', 'O', '9507', '5441', '7835', '4729', '2805', '5175', '8385', '6517', '347', 'G', '8857', '9315', '2643', '1413', '9575', '2367', 'C', 'I', 'J', '6495', '8757', '2247', '5693', '1059', '6345', 'C', '5721']
Output (English): 6509, 2805, 2367, 5721