Since {HEAD ~ some} of {TAIL ~ the polymerizations} exhibit some characteristics of living polymerizations, block copolymers can be readily made 
of
Since { HEAD ~ some } of { TAIL ~ the polymerizations } exhibit some characteristics of living polymerizations , block copolymers can be readily made
OTH HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH