{HEAD ~ The final flow} is useful for irrigation, {TAIL ~ washing} of structures and automobiles, filling swimming pools, and for returning to toilet tanks for flushing purposes 
is useful for
{ HEAD ~ The final flow } is useful for irrigation , { TAIL ~ washing } of structures and automobiles , filling swimming pools , and for returning to toilet tanks for flushing purposes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH