{TAIL ~ The base} of {HEAD ~ electrodes} of transistors Q1 and Q2 are fed a controller 14 via lines 15, 13, respectively as shown 
{ TAIL ~ The base } of { HEAD ~ electrodes } of transistors Q1 and Q2 are fed a controller 14 via lines 15 , 13 , respectively as shown
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH