{HEAD ~ A vehicle headlight} has a cam mechanism for displacing the reflector and the light source of the headlight with respect to each other, between two relative positions in which the headlight emits two different types of {TAIL ~ light beam} 
{ HEAD ~ A vehicle headlight } has a cam mechanism for displacing the reflector and the light source of the headlight with respect to each other , between two relative positions in which the headlight emits two different types of { TAIL ~ light beam }
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