{TAIL ~ The gate structures} include a gate dielectric layer and a gate film stack that includes {HEAD ~ a conductive layer} and an overlying hard mask 
{ TAIL ~ The gate structures } include a gate dielectric layer and a gate film stack that includes { HEAD ~ a conductive layer } and an overlying hard mask
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH