Task: Program Execution
Input (English): 9, ['Z', '6361', 'e', 'r', '7989', 'c', '3555', '5131', '3957', 'K', 'G', '1689', '4249', 'P', '1943', '9765', '165', 'C', '6365', '8107', '9001', '8403', 'z', 'I']
Output (English): Z, K, 6365