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