a first conductive type body region, which is formed in {TAIL ~ the high voltage} well, wherein {HEAD ~ the first source} is in the body region 
a first conductive type body region , which is formed in { TAIL ~ the high voltage } well , wherein { HEAD ~ the first source } is in the body region
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH