{HEAD ~ The feed forward power amplifier} includes {TAIL ~ a main path}, an error path and a first synthesizer 
includes
{ HEAD ~ The feed forward power amplifier } includes { TAIL ~ a main path } , an error path and a first synthesizer
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH