{HEAD ~ Each individual scanning entity} has {TAIL ~ an error corrector} for correcting erroneous scanned bar code information using the locally stored printhead defect models 
has
{ HEAD ~ Each individual scanning entity } has { TAIL ~ an error corrector } for correcting erroneous scanned bar code information using the locally stored printhead defect models
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH