The non volatile memory may be {HEAD ~ reprogrammable non volatile memory} organized into {TAIL ~ distinct blocks} of simultaneously erasable cells 
organized into
The non volatile memory may be { HEAD ~ reprogrammable non volatile memory } organized into { TAIL ~ distinct blocks } of simultaneously erasable cells
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH