Task: Program Execution
Input (English): 7, m, q, d, 4, 8, U
Output (English): [['7', 'm', 'q', 'd', '4', '8'], ['7', 'm', 'q', 'd', '4', 'U'], ['7', 'm', 'q', 'd', '8', 'U'], ['7', 'm', 'q', '4', '8', 'U'], ['7', 'm', 'd', '4', '8', 'U'], ['7', 'q', 'd', '4', '8', 'U'], ['m', 'q', 'd', '4', '8', 'U']]