These openings are then filled with {TAIL ~ conductive material} to form {HEAD ~ self aligned contacts} in the core region 
These openings are then filled with { TAIL ~ conductive material } to form { HEAD ~ self aligned contacts } in the core region
OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH