Task: Program Execution
Input (English): f, 6, E, l, 9, F, 9
Output (English): [['f', '6', 'E', 'l', '9', 'F'], ['f', '6', 'E', 'l', '9', '9'], ['f', '6', 'E', 'l', 'F', '9'], ['f', '6', 'E', '9', 'F', '9'], ['f', '6', 'l', '9', 'F', '9'], ['f', 'E', 'l', '9', 'F', '9'], ['6', 'E', 'l', '9', 'F', '9']]