Cycling Through Saved Passwords?

I have several different accounts/passwords for the same site. How can I cycle through to the one I want to fill in. As of right now it automatically fills in the last one used, but if I forget the password for it then it does me no good to even save them. Even when I delete the user and put in the one I want, then click autofill password, it just replaces with username with the one I just changed.