Task: Program Execution
Input (English): 9, 18, ['6243', 'R', '7343', 'y', '1889', '7715', 'S', '9581', '4161', '3229', '1897', 'Q', '1259', '2409', '7295', '1581', '3859', 'r', 'x', 'B']
Output (English): r, 3859, 1581, 7295, 2409, 1259, Q, 1897, 3229, 4161