Task: Program Execution
Input (English): x, 5, S, A, Z, 9
Output (English): [['x', '5', 'S', 'A', 'Z'], ['x', '5', 'S', 'A', '9'], ['x', '5', 'S', 'Z', '9'], ['x', '5', 'A', 'Z', '9'], ['x', 'S', 'A', 'Z', '9'], ['5', 'S', 'A', 'Z', '9']]