{HEAD ~ The magnetic duct} is also constructed to eliminate {TAIL ~ other undesirable particles} that result in a coarse grain film 
is constructed to eliminate
{ HEAD ~ The magnetic duct } is also constructed to eliminate { TAIL ~ other undesirable particles } that result in a coarse grain film
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH