A two color reading system includes {HEAD ~ binary encoders} for {TAIL ~ signals} of wide and narrow wavelength ranges 
for
A two color reading system includes { HEAD ~ binary encoders } for { TAIL ~ signals } of wide and narrow wavelength ranges
OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH