Task: Program Execution
Input (English): x, c, 5, r, w, 2
Output (English): [['x', 'c', '5', 'r', 'w'], ['x', 'c', '5', 'r', '2'], ['x', 'c', '5', 'w', '2'], ['x', 'c', 'r', 'w', '2'], ['x', '5', 'r', 'w', '2'], ['c', '5', 'r', 'w', '2']]