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