{HEAD ~ means} for conducting {TAIL ~ said primary energy} to said source of microwave energy; and 
for conducting
{ HEAD ~ means } for conducting { TAIL ~ said primary energy } to said source of microwave energy ; and
HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH