A semiconductor substrate is provided which includes a first well region having a first conductivity type, a second well region having the first conductivity type, a first gate structure overlying the first well region and {HEAD ~ the second gate structure} overlying {TAIL ~ the second well region} 
overlying
A semiconductor substrate is provided which includes a first well region having a first conductivity type , a second well region having the first conductivity type , a first gate structure overlying the first well region and { HEAD ~ the second gate structure } overlying { TAIL ~ the second well region }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL