Task: Program Execution
Input (English): 3, ['M', 'F', '4133', 'F', 'D', '3069', 'O', '4479', 'L', '4055', '1967', 'W', '8213', 'k', 'J', '1469', '3515']
Output (English): M, F, O, 4055, 8213, 1469