{HEAD ~ The silencer} 1, wherein {TAIL ~ the fibers} of the fibrous material have a maximum length of 5 mm 
{ HEAD ~ The silencer } 1 , wherein { TAIL ~ the fibers } of the fibrous material have a maximum length of 5 mm
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH