Task: Program Execution
Input (English): 2, O, 9, m, 5, n
Output (English): [['2', 'O', '9', 'm', '5'], ['2', 'O', '9', 'm', 'n'], ['2', 'O', '9', '5', 'n'], ['2', 'O', 'm', '5', 'n'], ['2', '9', 'm', '5', 'n'], ['O', '9', 'm', '5', 'n']]