The fuel vapor passage is communicated with the fuel tank to conduct {HEAD ~ fuel vapor}, which is generated in {TAIL ~ the fuel tank} 
is generated in
The fuel vapor passage is communicated with the fuel tank to conduct { HEAD ~ fuel vapor } , which is generated in { TAIL ~ the fuel tank }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL