Task: Program Execution
Input (English): 4, 7, ['137', '6057', 'q', 'o', 'E', 'G', '6237', 'v', 'P', '2947', 'S', '1575', 'W', 'B', '6681', '8605', '5509', '8315']
Output (English): o, E, G, 6237