The feed array is comprised of a plurality of {HEAD ~ separate feeds} which are aligned on {TAIL ~ a predetermined contour} 
The feed array is comprised of a plurality of { HEAD ~ separate feeds } which are aligned on { TAIL ~ a predetermined contour }
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL