Task: Program Execution
Input (English): 7, u, 8, 1, 9, w
Output (English): [['7', 'u', '8', '1', '9'], ['7', 'u', '8', '1', 'w'], ['7', 'u', '8', '9', 'w'], ['7', 'u', '1', '9', 'w'], ['7', '8', '1', '9', 'w'], ['u', '8', '1', '9', 'w']]