The control circuit increases an erasing voltage in accordance with {HEAD ~ the number} of {TAIL ~ times} the erasing loop is repeated 
The control circuit increases an erasing voltage in accordance with { HEAD ~ the number } of { TAIL ~ times } the erasing loop is repeated
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH