Additionally, {TAIL ~ the copolymers} may additionally include an initiating constituent to initiate {HEAD ~ polymerization} 
Additionally , { TAIL ~ the copolymers } may additionally include an initiating constituent to initiate { HEAD ~ polymerization }
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD