{HEAD ~ The hard mask} is then removed from {TAIL ~ the gate structures} in the non core region 
is removed from
{ HEAD ~ The hard mask } is then removed from { TAIL ~ the gate structures } in the non core region
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH