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