{HEAD ~ These complexes} are also soluble in {TAIL ~ many starting components} used for obtaining specific polymers 
are soluble in
{ HEAD ~ These complexes } are also soluble in { TAIL ~ many starting components } used for obtaining specific polymers
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH