The power source connected to the cells produces a chemical reaction that produces a flow of chlorine atoms into {HEAD ~ the body} of water for purifying {TAIL ~ the body} of water 
for purifying
The power source connected to the cells produces a chemical reaction that produces a flow of chlorine atoms into { HEAD ~ the body } of water for purifying { TAIL ~ the body } of water
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH