{HEAD ~ The invention} relates to {TAIL ~ a transceiver unit} for operation at a first and second transmitting/receiving frequency 
relates to
{ HEAD ~ The invention } relates to { TAIL ~ a transceiver unit } for operation at a first and second transmitting / receiving frequency
HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH