The publication or submission, in a

The publication or submission, in an interdealer quotation system that does not so identify any such unsolicited customer indications of interest, of a quotation respecting a security which has been the subject of both bid and ask quotations in an interdealer quotation system at specified prices on each of at least 12 days within the previous 30 calendar days, with no more than 4 business days in succession without such a two-way quotation;