{HEAD ~ The emitters} of {TAIL ~ transistors Q5} and Q6 are coupled to the emitter series feedback resistors R1 and R2, respectively 
of
{ HEAD ~ The emitters } of { TAIL ~ transistors Q5 } and Q6 are coupled to the emitter series feedback resistors R1 and R2 , respectively
HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH