{TAIL ~ A first gate terminal} is formed and coupled to {HEAD ~ the second sub gate} of the first transistor 
{ TAIL ~ A first gate terminal } is formed and coupled to { HEAD ~ the second sub gate } of the first transistor
TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH