{HEAD ~ A method} 17, wherein {TAIL ~ the receptor element} is textile, leather, ceramic or wool 
wherein
{ HEAD ~ A method } 17 , wherein { TAIL ~ the receptor element } is textile , leather , ceramic or wool
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH