Task: Program Execution
Input (English): 4, 7, ['y', '5339', 'M', 'O', 's', 'n', 'm', 'b', '9543', 'M', '3513', 'P', 'R', 'n', '9527', '5393', '3673', '839', 'V', 'z', '3501', '4707', 's', 't', '5917', 'n']
Output (English): O, 3513, 839, 5917