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