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