Task: Program Execution
Input (English): 4, ['6027', '1619', '1967', 'B', 'Y', '8535', '8201', 'w', '8537', '2189', '8809', '6083', '7465', 'A', 'F', '8973', 'Q']
Output (English): 6027, 1619, 1967, B