12. Interest To the extent permitted by applicable law, if any sum of money payable hereunder or under any Transaction is not paid when due, interest shall accrue on the unpaid sum us a separate debt at the greater of the Pricing Rate for the Transaction to which such sum relates (where such sum is preferable to a Transaction) and LIBOR on a 360 day basis or 365 day basis in accordance with the applicable ISMA convention, for the actual number of days during the period from and including the date on which payment was due to. but excluding, the date of payment, 13. Single Agreement Each party acknowledges that, and has entered into this Agreement and will enter into each Transaction hereunder in consideration of and in reliance upon the fact that all Transactions hereunder constitute a single business and contractual relationship and are made in consideration of each other. Accordingly. each party agrees (i) to perform all of its obligations in respect of each Transaction hereunder, and that a default in the performance of any such obligations shall constitute a default by it in respect of all Transactions hereunder, and (ii) that payments, deliveries and other transfers made by either of them in respect of any Transaction shall be deemed to have been made in consideration of payments, deliveries and other transfers in respect of any other Transactions hereunder. IS. Nedra and Other Communications (a) Any notice or other communication to be given under this Agreement - (i) shall be in the English language. and except where expressly otherwise provided in this Agreement. shall be in writing: (ii) may be given in any manner described in subparagraphs (b) and (c) below: (iii) shall be sent to the party to whom it is to be given at the address or number, or in accordance with the electronic messaging details, set out in Annex I hereto. (b) Subject to subparagraph (c) below. any such notice or other communication shall be effective - (i) if