Trenches separated by portions of {HEAD ~ the body} are then formed in {TAIL ~ the active areas} in which transistors are to be formed 
Trenches separated by portions of { HEAD ~ the body } are then formed in { TAIL ~ the active areas } in which transistors are to be formed
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH