{

if ($0 == "</li>")
{
    k++;
    prev_li=1
}
else
{
    if (prev_li==1)
    {
        if ($0 == "<li>" && k % 2 != 0)
        {

        }
        else
        {
            print "</li>";
            print $0
        }
    }
    else
    {
        print $0;
    }

    prev_li = 0
}

}