{HEAD ~ Additional plasma post treatment} may be used to enhance {TAIL ~ the properties} of the resulting coated products 
used to enhance
{ HEAD ~ Additional plasma post treatment } may be used to enhance { TAIL ~ the properties } of the resulting coated products
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH