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