a certain property has been taken on lease for a period of 14 years from the owner. after the lapse of lease, the agreement has not been renewed but the lessor did not insist for surrender of the propery. the lessee continued to be in possession for nearly 30 years, paid all taxes on the same and was carrying on a business in the same. thereafter, the lessee sub-let it to 'x' for 25 years. the sub-lessee paid rent for sometime and then started commiting default. in the meantime, the original owner and sub-lessee collided and without notice to the lessee got the property sold to the sub-lessee. what are the rights of the lessee in the instant situation?