The water purifier 3, further comprising moveable gates to control {TAIL ~ fluid flow} from into {HEAD ~ said body} of water 
The water purifier 3 , further comprising moveable gates to control { TAIL ~ fluid flow } from into { HEAD ~ said body } of water
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH