means for supplying {HEAD ~ a mixture} of {TAIL ~ water} and detergent to said pump; comprising 
means for supplying { HEAD ~ a mixture } of { TAIL ~ water } and detergent to said pump ; comprising
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH