Task: Program Execution
Input (English): 13, 18, ['1177', 'z', 'y', 'W', 'O', '7373', '2473', '3475', 'M', '8343', 'N', 'w', 'l', '9681', 'J', '6633', 'v', 'c', '1575', 'L']
Output (English): cv6633J9681l