Based on the customers choices, {TAIL ~ the salesperson} is able to build a portfolio of {HEAD ~ possibilities} 
Based on the customers choices , { TAIL ~ the salesperson } is able to build a portfolio of { HEAD ~ possibilities }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD