order categories through wordpress loop

using query_posts

<?php query_posts("&开发者_开发知识库cat=775,777,779&posts_per_page=12&orderby=date");?>

<?php while (have_posts()) : the_post(); ?>

i'm trying to run through 3 categories and post like so...

cat1post1, cat2post1, cat3post1, cat1post2, cat2post2, cat3post2, etc... and order by date... can this be accomplished with only 1 loop?

For this type of customized post ordering you can install a Wordpress plugin called: aStickyPostOrderER It lets you customize the order of appearance of posts per category, per tag or over-all in a WordPress (versions 2.3+) blog.