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I want to achieve something like this, I don't know if it is possible and what would be the best way to do it:

The way I query the posts is like this:

<div class="post">
    <?php global $wp_query;
    query_posts( array('post_type' => array( 'lecturas-post' ),'showposts' => 15, 'paged'=>$paged, 'order' => 'DESC' ));?>
    <?php while ( $wp_query->have_posts() ) : $wp_query->the_post(); ?>
        <div><?php the_title() ?></a>
    <?php endwhile; // end of the loop. ?>
</div>

Anyone can give me a tip on how or best way to do it?