“(v) at the reasonable request of the Lessee to enforce the repairing covenants given by the present tenant of the lower part in the lease thereof, but without prejudice to the right of the Lessee to enforce such repairing covenants direct against the said tenant of the lower part. (vi) if the lower part comes into the possession and occupation of the Lessor at the expiration or determination of the existing lease thereof to maintain the said lower part in accordance with the terms of the said existing lease as if it were the Lessee thereunder during such time as the said lower part remains in the possession and occupation of the Lessor. (vii) to use its best endeavours to ensure that any subsequent lease tenancy or occupation of the lower part shall contain repairing covenants not less onerous than those at present contained in the existing lease thereof.”