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