Task: Program Execution
Input (English): 4, u, W, O, 6, 2, I
Output (English): [['4', 'u', 'W', 'O', '6', '2'], ['4', 'u', 'W', 'O', '6', 'I'], ['4', 'u', 'W', 'O', '2', 'I'], ['4', 'u', 'W', '6', '2', 'I'], ['4', 'u', 'O', '6', '2', 'I'], ['4', 'W', 'O', '6', '2', 'I'], ['u', 'W', 'O', '6', '2', 'I']]