{HEAD ~ Each} of {TAIL ~ amplifiers} 76, 78, 80, and 82 may be identical to the embodiment disclosed with respect to FIG 9 
of
{ HEAD ~ Each } of { TAIL ~ amplifiers } 76 , 78 , 80 , and 82 may be identical to the embodiment disclosed with respect to FIG 9
HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH