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