A semiconductor memory device is provided with {HEAD ~ a plurality} of {TAIL ~ primary memory cell blocks} and a replacement memory cell block identical in size to the primary memory cell blocks 
of
A semiconductor memory device is provided with { HEAD ~ a plurality } of { TAIL ~ primary memory cell blocks } and a replacement memory cell block identical in size to the primary memory cell blocks
OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH