The chip carrier has a rectangular surface with a plurality of {HEAD ~ conductive pads} at {TAIL ~ its periphery} 
at
The chip carrier has a rectangular surface with a plurality of { HEAD ~ conductive pads } at { TAIL ~ its periphery }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL