This produces {HEAD ~ a CMOS device} in the core region that has {TAIL ~ high device density} and includes high speed CMOS devices the non core region 
This produces { HEAD ~ a CMOS device } in the core region that has { TAIL ~ high device density } and includes high speed CMOS devices the non core region
OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH