{HEAD ~ A second set} of {TAIL ~ narrowband signals} may then be recovered from the second set of sampled signals 
of
{ HEAD ~ A second set } of { TAIL ~ narrowband signals } may then be recovered from the second set of sampled signals
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH