Task: Program Execution
Input (English): 13, 18, ['681', '775', '2813', '5389', '2403', 'R', '507', '6193', '9409', 'q', 'F', '4369', '281', '9859', '5261', 'h', '8615', '1837', '8463', 'a']
Output (English): 1837, 8615, h, 5261, 9859, 281