The replacement memory block includes all the required analog row and column driver and {HEAD ~ sense circuitry} for {TAIL ~ the memory cells} contained in the replacement block 
for
The replacement memory block includes all the required analog row and column driver and { HEAD ~ sense circuitry } for { TAIL ~ the memory cells } contained in the replacement block
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH