{HEAD ~ A fibrous filter element} for trapping diesel engine exhaust particulates comprises {TAIL ~ a mass} of coiled wire of flattened cross section compacted into a small passage gas pervious body 
comprises
{ HEAD ~ A fibrous filter element } for trapping diesel engine exhaust particulates comprises { TAIL ~ a mass } of coiled wire of flattened cross section compacted into a small passage gas pervious body
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH