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