{HEAD ~ A well} 31 having {TAIL ~ a first diffusion type} is formed in a substrate 30 
having
{ HEAD ~ A well } 31 having { TAIL ~ a first diffusion type } is formed in a substrate 30
HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH