Consequently, the threshold voltages of {HEAD ~ the memory cells} connected to {TAIL ~ the word line WL0} are lowered 
connected to
Consequently , the threshold voltages of { HEAD ~ the memory cells } connected to { TAIL ~ the word line WL0 } are lowered
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH