{HEAD ~ The cut off portion} of {TAIL ~ light rays} forms a cut off portion of the light distribution pattern 
of
{ HEAD ~ The cut off portion } of { TAIL ~ light rays } forms a cut off portion of the light distribution pattern
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH