A fourth array of {TAIL ~ bitlines} and channel regions is formed in {HEAD ~ the third thin film polysilicon layer} 
A fourth array of { TAIL ~ bitlines } and channel regions is formed in { HEAD ~ the third thin film polysilicon layer }
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD