Thereafter, {HEAD ~ the bids} forming this combination can be declared {TAIL ~ the winning bids} of the auction, reverse auction or exchange 
declared
Thereafter , { HEAD ~ the bids } forming this combination can be declared { TAIL ~ the winning bids } of the auction , reverse auction or exchange
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH