{HEAD ~ A controller} 64 provides {TAIL ~ signals} to flow controllers 54, 55, 56, 61 and 62 and pump 38 
provides
{ HEAD ~ A controller } 64 provides { TAIL ~ signals } to flow controllers 54 , 55 , 56 , 61 and 62 and pump 38
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH