>4</span><span class='delimiter'>)</span></span> &apos;<span class='collection list'><span class='delimiter'>(</span><span class='symbol'>conj</span> <span class='collection vector'><span class='delimiter'>[</span><span class='number'>1</span> <span class='number'>2</span> <span class='number'>3</span><span class='delimiter'>]</span></span> <span class='symbol'>n</span><span class='delimiter'>)</span></span><span class='delimiter'>]</span></span> <span class='symbol'>callback</span><span class='delimiter'>)