phase discriminating means connected to said detecting means for outputting an output signal representing {HEAD ~ said phase relations} detected by {TAIL ~ said detecting means} 
detected by
phase discriminating means connected to said detecting means for outputting an output signal representing { HEAD ~ said phase relations } detected by { TAIL ~ said detecting means }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL