{HEAD ~ a first flexible tube communicating} by {TAIL ~ one end} with said reservoir and by its other end with the suction side of said pump for delivering said liquid from said reservoir to said pump 
by
{ HEAD ~ a first flexible tube communicating } by { TAIL ~ one end } with said reservoir and by its other end with the suction side of said pump for delivering said liquid from said reservoir to said pump
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH