After discharge from the cyclone, {TAIL ~ the air} is mixed and sterilized with {HEAD ~ ozone gas} 
After discharge from the cyclone , { TAIL ~ the air } is mixed and sterilized with { HEAD ~ ozone gas }
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD