how do I view my closed or private groups on facebook?

[Edward]

I created a group on Facebook and made it a private group (so that only members can access it). However, it does not show up on my group list (only open groups show up there), and I cannot find how to get back to it. Does anyone know how to do that?
Al mamun, can you be a little more specific? I clicked on help in the privacy settings but didn't find anything about accessing my closed groups. I have about 4 or 5 closed groups that I am a member of, and none of them show up under my groups....it only lists the open groups.

[Al mamun]

by the help from privacy setting.......