Task: Program Execution
Input (English): x, 4, 6, 7, 0, 2
Output (English): [['x', '4', '6', '7', '0'], ['x', '4', '6', '7', '2'], ['x', '4', '6', '0', '2'], ['x', '4', '7', '0', '2'], ['x', '6', '7', '0', '2'], ['4', '6', '7', '0', '2']]