Task: Program Execution
Input (English): 6, 5, B, f, 4, D, H
Output (English): [['6', '5', 'B', 'f', '4', 'D'], ['6', '5', 'B', 'f', '4', 'H'], ['6', '5', 'B', 'f', 'D', 'H'], ['6', '5', 'B', '4', 'D', 'H'], ['6', '5', 'f', '4', 'D', 'H'], ['6', 'B', 'f', '4', 'D', 'H'], ['5', 'B', 'f', '4', 'D', 'H']]