{HEAD ~ a lens element} arranged adjacent to {TAIL ~ each light emitting element} to capture the light from the element; and 
arranged adjacent to
{ HEAD ~ a lens element } arranged adjacent to { TAIL ~ each light emitting element } to capture the light from the element ; and
HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH