Task: Program Execution
Input (English): 1, F, n, 7, O, s, 0
Output (English): [['1', 'F', 'n', '7', 'O', 's'], ['1', 'F', 'n', '7', 'O', '0'], ['1', 'F', 'n', '7', 's', '0'], ['1', 'F', 'n', 'O', 's', '0'], ['1', 'F', '7', 'O', 's', '0'], ['1', 'n', '7', 'O', 's', '0'], ['F', 'n', '7', 'O', 's', '0']]