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