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