In the present example, the gate structures interpose LDD features respectively disposed in {HEAD ~ the source region} and {TAIL ~ the drain region} 
In the present example , the gate structures interpose LDD features respectively disposed in { HEAD ~ the source region } and { TAIL ~ the drain region }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL