If an alternative interest rate or alternative basis is not agreed within the Negotiation Period, and the relevant circumstances are continuing at the end of the Negotiation Period, then the Agent shall, with the agreement of each Lender or (as the case may be) the Affected Lender, set an interest period and interest rate representing the Cost of Funding of the Lenders or (as the case may be) the Affected Lender in Dollars or in any available currency of their or its Contribution plus the Margin and the Mandatory Cost (if any); and the procedure provided for by this Clause 5.12 shall be repeated if the relevant circumstances are continuing at the end of the interest period so set by the Agent