The term "classified alienable lands" is not a standard legal or land management term. It's possible that you're referring to a specific jurisdiction or context where this term is used.

To give you a helpful answer, I need more information. Please tell me:

* What country or region are you interested in? Land classifications and ownership laws vary greatly from place to place.

* What is the context of your question? Are you looking for information on how to buy or sell land? Are you researching land use policy?

Once I have more information, I can provide a more accurate and useful response.