Note that the P type well {HEAD ~ 57 b} is preferably adjacent to {TAIL ~ the body region} 57 in a vertical direction, and defined by a same mask with the body region 57 
Note that the P type well { HEAD ~ 57 b } is preferably adjacent to { TAIL ~ the body region } 57 in a vertical direction , and defined by a same mask with the body region 57
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH