Task: Program Execution
Input (English): 1, I, 8, 2, x, S
Output (English): [['1', 'I', '8', '2', 'x'], ['1', 'I', '8', '2', 'S'], ['1', 'I', '8', 'x', 'S'], ['1', 'I', '2', 'x', 'S'], ['1', '8', '2', 'x', 'S'], ['I', '8', '2', 'x', 'S']]