Task: Program Execution
Input (English): 6, 8, 6, P, E, u, M
Output (English): [['6', '8', '6', 'P', 'E', 'u'], ['6', '8', '6', 'P', 'E', 'M'], ['6', '8', '6', 'P', 'u', 'M'], ['6', '8', '6', 'E', 'u', 'M'], ['6', '8', 'P', 'E', 'u', 'M'], ['6', '6', 'P', 'E', 'u', 'M'], ['8', '6', 'P', 'E', 'u', 'M']]