{HEAD ~ This body} spaces {TAIL ~ a source region} of the second conductivity type from the drift region 
spaces
{ HEAD ~ This body } spaces { TAIL ~ a source region } of the second conductivity type from the drift region
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH