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