Task: Program Execution
Input (English): 6, 9, ['4871', '9721', 'H', '8373', 'z', 'u', '1007', 'K', '4309', 'w', 'J', 'y', '433', 'N', '4177', 'D', 'H', 'C', '2321', 'j', 'b', 'W', 'j', '2493']
Output (English): 4309K1007u