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