Task: Program Execution
Input (English): 6, x, 2, o, 8, f, 0
Output (English): [['6', 'x', '2', 'o', '8', 'f'], ['6', 'x', '2', 'o', '8', '0'], ['6', 'x', '2', 'o', 'f', '0'], ['6', 'x', '2', '8', 'f', '0'], ['6', 'x', 'o', '8', 'f', '0'], ['6', '2', 'o', '8', 'f', '0'], ['x', '2', 'o', '8', 'f', '0']]