{TAIL ~ The main path} amplifies {HEAD ~ a power level} of an input signal to generate a path turning signal 
{ TAIL ~ The main path } amplifies { HEAD ~ a power level } of an input signal to generate a path turning signal
TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH