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                Article 55-4
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                    A borrowing securities firm may use one or more book-entry central government bonds and/or bank guarantees to serve as non-cash securities borrowing collateral for one or more securities borrowing transactions. 
    The maturity date of the bank guarantee or book-entry central government bond, or, in a case where multiple bank guarantees or book-entry central government bonds with different maturity dates are used to serve as non-cash collateral for a single securities borrowing transaction, the earliest maturity date shall extend beyond the return date for the securities borrowing transaction. 
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