Task: Program Execution
Input (English): U, 9, 1, g, q, s
Output (English): [['U', '9', '1', 'g', 'q'], ['U', '9', '1', 'g', 's'], ['U', '9', '1', 'q', 's'], ['U', '9', 'g', 'q', 's'], ['U', '1', 'g', 'q', 's'], ['9', '1', 'g', 'q', 's']]