In writing, {HEAD ~ the n transistors} in {TAIL ~ the read circuits} form with two p transistors NOT circuits whose outputs form the data lines 
in
In writing , { HEAD ~ the n transistors } in { TAIL ~ the read circuits } form with two p transistors NOT circuits whose outputs form the data lines
OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH