Task: Program Execution
Input (English): 2, 13, ['6515', '2911', 'y', 'j', '4017', 'X', '5157', 'q', '8313', '3511', 'v', 'c', 'j', 'O', '2467', '9999', '4111', 'q', '7159', 'F', '1751', '1871', '4065', 'i', 'Z', 'S', 'v', 'u', 'u']
Output (English): 2911, 2467, u