A third dielectric layer covers {TAIL ~ the second array} of {HEAD ~ wordlines} and exposed portions of the second dielectric layer 
A third dielectric layer covers { TAIL ~ the second array } of { HEAD ~ wordlines } and exposed portions of the second dielectric layer
OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH