Task: Program Execution
Input (English): 6, B, B, 3, 7, 1
Output (English): [['6', 'B', 'B', '3', '7'], ['6', 'B', 'B', '3', '1'], ['6', 'B', 'B', '7', '1'], ['6', 'B', '3', '7', '1'], ['6', 'B', '3', '7', '1'], ['B', 'B', '3', '7', '1']]