{HEAD ~ These complexes} are insoluble in {TAIL ~ methylene chloride} and can be separated from unreacted polyetherimide by filtration 
are insoluble in
{ HEAD ~ These complexes } are insoluble in { TAIL ~ methylene chloride } and can be separated from unreacted polyetherimide by filtration
HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH