In the sterilizing chamber, {HEAD ~ contact} of the filtered water and air ozone mixture acts to simultaneously purify {TAIL ~ both} 
acts to simultaneously purify
In the sterilizing chamber , { HEAD ~ contact } of the filtered water and air ozone mixture acts to simultaneously purify { TAIL ~ both }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH REL REL REL REL TAIL TAIL TAIL TAIL TAIL