The first driver circuit drives {HEAD ~ a first load element} formed of the first material based on {TAIL ~ the first bias voltage} 
The first driver circuit drives { HEAD ~ a first load element } formed of the first material based on { TAIL ~ the first bias voltage }
OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL