The first transistor includes {HEAD ~ a first gate} with a second sub gate surrounding {TAIL ~ a first sub gate} 
The first transistor includes { HEAD ~ a first gate } with a second sub gate surrounding { TAIL ~ a first sub gate }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL