Task: Program Execution
Input (English): 1, 4, ['9819', '9215', '9121', '2709', '3927', '2527', 'c', 'n', 'k', '3065', 'z', 'l', 'W', '6147', '6529', '5401', 'X']
Output (English): 9819, 3927, k, W, X