Task: Program Execution
Input (English): 3, ['6873', '5221', '7465', '2341', 'O', '4939', 'I', 'V', '3115', '3819', 'Q', '9437', '7955', '9737', 'I', 'X', '4357', '2593', 'z', 'a', 'y', '2741', '789', 'v', '9887', '5133', 'B']
Output (English): 6873, 5221, 7465