Convert wordpress query into SHORTCODE

Hello! I need the following wordpress query and CSS created into a shortcode named "cpPOSTS" <?php query_posts('showposts=12&cat=9'); ?> <div class="wrap_container"> <div class="left_container"> <?php while ( have_posts() ) : the_post(); ?> <div class="post_list"> <div class="image_left_container"> <?php if ( has_post_thumbnail() ) { the_post_thumbnail('large'); } ?> </div> <div class="post_right_content"> <h2><?php the_title(); ?></h2></br> <?php the_content(); ?> </div> </div> <?php endwhile; ?> </div> </div> All I need is the exact code to plug into my [login to view URL] file....