Task: Program Execution
Input (English): U, 6, W, L, 0, h, 5
Output (English): [['U', '6', 'W', 'L', '0', 'h'], ['U', '6', 'W', 'L', '0', '5'], ['U', '6', 'W', 'L', 'h', '5'], ['U', '6', 'W', '0', 'h', '5'], ['U', '6', 'L', '0', 'h', '5'], ['U', 'W', 'L', '0', 'h', '5'], ['6', 'W', 'L', '0', 'h', '5']]