Task: Program Execution
Input (English): u, r, 3, H, 1, q, 6
Output (English): [['u', 'r', '3', 'H', '1', 'q'], ['u', 'r', '3', 'H', '1', '6'], ['u', 'r', '3', 'H', 'q', '6'], ['u', 'r', '3', '1', 'q', '6'], ['u', 'r', 'H', '1', 'q', '6'], ['u', '3', 'H', '1', 'q', '6'], ['r', '3', 'H', '1', 'q', '6']]