Task: Program Execution
Input (English): e, f, j, 2, 4, D, 6
Output (English): [['e', 'f', 'j', '2', '4', 'D'], ['e', 'f', 'j', '2', '4', '6'], ['e', 'f', 'j', '2', 'D', '6'], ['e', 'f', 'j', '4', 'D', '6'], ['e', 'f', '2', '4', 'D', '6'], ['e', 'j', '2', '4', 'D', '6'], ['f', 'j', '2', '4', 'D', '6']]