{TAIL ~ A first address compare circuit} compares {HEAD ~ a received address} for the first memory with the first redundant address 
{ TAIL ~ A first address compare circuit } compares { HEAD ~ a received address } for the first memory with the first redundant address
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH