Form over a substrate the combination of a gate oxide layer and a gate layer patterned into gate stacks with sidewalls for an NMOS FET device over {HEAD ~ a P well} in {TAIL ~ the substrate} and a PMOS FET device over an N well 
in
Form over a substrate the combination of a gate oxide layer and a gate layer patterned into gate stacks with sidewalls for an NMOS FET device over { HEAD ~ a P well } in { TAIL ~ the substrate } and a PMOS FET device over an N well
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH