Task: Program Execution
Input (English): Q, 6, N, 7, Z, 9
Output (English): [['Q', '6', 'N', '7', 'Z'], ['Q', '6', 'N', '7', '9'], ['Q', '6', 'N', 'Z', '9'], ['Q', '6', '7', 'Z', '9'], ['Q', 'N', '7', 'Z', '9'], ['6', 'N', '7', 'Z', '9']]