Multi urls for single post

Hi,
Can I add 2/3 different urls for the same single post?
I mean my post url is http://www.abc.com/post/ABCD and I would like to create a new url http://www.abc.com/post/EFGH which point to the same post.
I have lot of posts so I dont want to create new posts – only to add the “EFGHT” in the orginal post…
It can be done?
Thanks,
Dvir.