{TAIL ~ Transistors} 51 and 52 are for transferring {HEAD ~ voltage} to the selecting gate lines SGDI 
{ TAIL ~ Transistors } 51 and 52 are for transferring { HEAD ~ voltage } to the selecting gate lines SGDI
TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH