As {HEAD ~ more IC devices} are fabricated on {TAIL ~ a single chip} or die, it is desirable to preserve the surface area 
are fabricated on
As { HEAD ~ more IC devices } are fabricated on { TAIL ~ a single chip } or die , it is desirable to preserve the surface area
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH