{HEAD ~ The first bias circuit} has {TAIL ~ a first reference load element} formed of a first material and generates a first bias voltage 
has
{ HEAD ~ The first bias circuit } has { TAIL ~ a first reference load element } formed of a first material and generates a first bias voltage
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH