Therefore, {TAIL ~ a semiconductor memory device} having many types of {HEAD ~ memory matrices} can be highly integrated in the same cell matrix region in the same layout 
Therefore , { TAIL ~ a semiconductor memory device } having many types of { HEAD ~ memory matrices } can be highly integrated in the same cell matrix region in the same layout
OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH