Task: Program Execution
Input (English): M, 3, 9, W, 3, 9
Output (English): [['M', '3', '9', 'W', '3'], ['M', '3', '9', 'W', '9'], ['M', '3', '9', '3', '9'], ['M', '3', 'W', '3', '9'], ['M', '9', 'W', '3', '9'], ['3', '9', 'W', '3', '9']]