The function of the P type well 57 b is to reduce the impact of {HEAD ~ the N type} buried {TAIL ~ layer} 58 a on the body region 57 
buried
The function of the P type well 57 b is to reduce the impact of { HEAD ~ the N type } buried { TAIL ~ layer } 58 a on the body region 57
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH