class='hljl-k'>end</span><span class='hljl-t'>
    </span><span class='hljl-k'>for</span><span class='hljl-t'> </span><span class='hljl-n'>i</span><span class='hljl-t'> </span><span class='hljl-kp'>in</span><span class='hljl-t'> </span><span class='hljl-ni'>1</span><span class='hljl-oB'>:</span><span class='hljl-ni'>3</span><span class='hljl-t'>
        </span><span class='hljl-k'>if</span><span class='hljl-t'> </span><span class='hljl-n'>du</span><span class='hljl-p'>[</span><span class='hljl-n'>i</span><s