Task: Program Execution
Input (English): 6, E, 0, 7, p, D, f
Output (English): [['6', 'E', '0', '7', 'p', 'D'], ['6', 'E', '0', '7', 'p', 'f'], ['6', 'E', '0', '7', 'D', 'f'], ['6', 'E', '0', 'p', 'D', 'f'], ['6', 'E', '7', 'p', 'D', 'f'], ['6', '0', '7', 'p', 'D', 'f'], ['E', '0', '7', 'p', 'D', 'f']]