Task: Program Execution
Input (English): 12, 18, ['L', '3241', '7711', 'M', '6137', 'a', '7073', 'u', 'l', '2523', 'P', 'D', '3047', '6561', 'H', 'x', 'Q', '2781']
Output (English): D, 3047, 6561, H, x, Q, 2781