{HEAD ~ The ends} of the nozzle parts 13, 14 facing {TAIL ~ the contact member} 5 are guided in the groove 12 
{ HEAD ~ The ends } of the nozzle parts 13 , 14 facing { TAIL ~ the contact member } 5 are guided in the groove 12
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH