Task: Program Execution
Input (English): 8, d, 8, C, 8, 4, 9
Output (English): [['8', 'd', '8', 'C', '8', '4'], ['8', 'd', '8', 'C', '8', '9'], ['8', 'd', '8', 'C', '4', '9'], ['8', 'd', '8', '8', '4', '9'], ['8', 'd', 'C', '8', '4', '9'], ['8', '8', 'C', '8', '4', '9'], ['d', '8', 'C', '8', '4', '9']]