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