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