The first input signal is applied to a base or gate of {HEAD ~ the second transistor} with {TAIL ~ regard} to said reference point 
with
The first input signal is applied to a base or gate of { HEAD ~ the second transistor } with { TAIL ~ regard } to said reference point
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH