Task: Program Execution
Input (English): p, 9, f, 6, 7, q
Output (English): [['p', '9', 'f', '6', '7'], ['p', '9', 'f', '6', 'q'], ['p', '9', 'f', '7', 'q'], ['p', '9', '6', '7', 'q'], ['p', 'f', '6', '7', 'q'], ['9', 'f', '6', '7', 'q']]