{HEAD ~ switch means} coupled to a source of electrical energy and to said {TAIL ~ pump} for selectively energizing said pump, said switch means including: 
coupled to
{ HEAD ~ switch means } coupled to a source of electrical energy and to said { TAIL ~ pump } for selectively energizing said pump , said switch means including :
HEAD HEAD HEAD HEAD HEAD HEAD REL OTH OTH OTH OTH OTH OTH OTH REL OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH