For example, {HEAD ~ the user} may view {TAIL ~ the area code} of one of the numbers and recognize the number as being a long distance call that is more expensive 
view
For example , { HEAD ~ the user } may view { TAIL ~ the area code } of one of the numbers and recognize the number as being a long distance call that is more expensive
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH