Task: Program Execution
Input (English): 6, 6, 2, S, 7, 2, 9
Output (English): [['6', '6', '2', 'S', '7', '2'], ['6', '6', '2', 'S', '7', '9'], ['6', '6', '2', 'S', '2', '9'], ['6', '6', '2', '7', '2', '9'], ['6', '6', 'S', '7', '2', '9'], ['6', '2', 'S', '7', '2', '9'], ['6', '2', 'S', '7', '2', '9']]