{TAIL ~ A method} in {HEAD ~ accordance} 1 wherein the polymerization product has the general formula 
{ TAIL ~ A method } in { HEAD ~ accordance } 1 wherein the polymerization product has the general formula
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH