{TAIL ~ The first and second sub gates} of the first gate are separated by {HEAD ~ a first intergate dielectric layer} 
{ TAIL ~ The first and second sub gates } of the first gate are separated by { HEAD ~ a first intergate dielectric layer }
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD