Task: Program Execution
Input (English): 5, W, 3, 7, q, U
Output (English): [['5', 'W', '3', '7', 'q'], ['5', 'W', '3', '7', 'U'], ['5', 'W', '3', 'q', 'U'], ['5', 'W', '7', 'q', 'U'], ['5', '3', '7', 'q', 'U'], ['W', '3', '7', 'q', 'U']]