I think It's possible! Just need little bit hard work.
First add CSS.
Then search for
<b:include data='post' name='post' />
Now replace this code with this one -
<b:if cond='data:blog.url == data:blog.homepageUrl'> <b:loop values='data:post.labels' var='label'><b:if cond='data:label.isLast == "true"'>
<b:if cond='data:label.name != "Your First Label Name"'><div class='row'><b:include data='post' name='post' /></div></b:if>
<b:if cond='data:label.name != "Your Second Label Name"'><div class='row'><b:include data='post' name='post' /></div></b:if>
<b:if cond='data:label.name != "Your Third Label Name"'><div class='row'> <b:include data='post' name='post' /></div></b:if>
</b:if></b:loop><b:else/><b:include data='post' name='post' /></b:if>
Note: you should remember that every post should have one label. And don't forget to add class='column' in article.
I don't try it. Check it by yourself and give me feedback.