Task: Program Execution
Input (English): 2, 4, ['c', 'W', 'A', 'H', 't', 'B', '4115', 'W', 'f', '6247', '2605', '9323', '3987', '7079', 'w', '6993', 's', '4605']
Output (English): W, B, 6247, 7079, 4605