Task: Program Execution
Input (English): l, a, 7, O, 7, 6
Output (English): [['l', 'a', '7', 'O', '7'], ['l', 'a', '7', 'O', '6'], ['l', 'a', '7', '7', '6'], ['l', 'a', 'O', '7', '6'], ['l', '7', 'O', '7', '6'], ['a', '7', 'O', '7', '6']]