Task: Program Execution
Input (English): i, 2, 0, 5, W, r
Output (English): [['i', '2', '0', '5', 'W'], ['i', '2', '0', '5', 'r'], ['i', '2', '0', 'W', 'r'], ['i', '2', '5', 'W', 'r'], ['i', '0', '5', 'W', 'r'], ['2', '0', '5', 'W', 'r']]