A number of unique combinations of bids can be formed from the received bids, and the one combination of bids which represents the best value in {HEAD ~ terms} of {TAIL ~ an auction setting}, a reverse auction setting and an exchange setting can be determined 
A number of unique combinations of bids can be formed from the received bids , and the one combination of bids which represents the best value in { HEAD ~ terms } of { TAIL ~ an auction setting } , a reverse auction setting and an exchange setting can be determined
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