However, persons skilled in the art can alter {HEAD ~ an input signal} of {TAIL ~ an input end} of the DDA 316 according to the above disclosure 
of
However , persons skilled in the art can alter { HEAD ~ an input signal } of { TAIL ~ an input end } of the DDA 316 according to the above disclosure
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH