{HEAD ~ a first impurity diffusion region} in {TAIL ~ the cell array region} between the first and second gate electrodes 
in
{ HEAD ~ a first impurity diffusion region } in { TAIL ~ the cell array region } between the first and second gate electrodes
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH