Task: Program Execution
Input (English): 8, 6, O, L, 9, 0, F
Output (English): [['8', '6', 'O', 'L', '9', '0'], ['8', '6', 'O', 'L', '9', 'F'], ['8', '6', 'O', 'L', '0', 'F'], ['8', '6', 'O', '9', '0', 'F'], ['8', '6', 'L', '9', '0', 'F'], ['8', 'O', 'L', '9', '0', 'F'], ['6', 'O', 'L', '9', '0', 'F']]