Task: Program Execution
Input (English): 9, 7, Y, 6, b, f, 0
Output (English): [['9', '7', 'Y', '6', 'b', 'f'], ['9', '7', 'Y', '6', 'b', '0'], ['9', '7', 'Y', '6', 'f', '0'], ['9', '7', 'Y', 'b', 'f', '0'], ['9', '7', '6', 'b', 'f', '0'], ['9', 'Y', '6', 'b', 'f', '0'], ['7', 'Y', '6', 'b', 'f', '0']]