Consequently {HEAD ~ the only word line} required for enabling the ROM cells is {TAIL ~ the word line} which enables the RAM cells 
Consequently { HEAD ~ the only word line } required for enabling the ROM cells is { TAIL ~ the word line } which enables the RAM cells
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH