Task: Program Execution
Input (English): k, U, 5, 1, 9, 0, s
Output (English): [['k', 'U', '5', '1', '9', '0'], ['k', 'U', '5', '1', '9', 's'], ['k', 'U', '5', '1', '0', 's'], ['k', 'U', '5', '9', '0', 's'], ['k', 'U', '1', '9', '0', 's'], ['k', '5', '1', '9', '0', 's'], ['U', '5', '1', '9', '0', 's']]