{TAIL ~ A shutter} that can open and close the air discharge port is mounted on {HEAD ~ a case} 
{ TAIL ~ A shutter } that can open and close the air discharge port is mounted on { HEAD ~ a case }
TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD