D/M/Y will sort all the days of each month together, so the first of every month will be before the 2nd of every month, M/D/Y will do the same for months of each year or something.
Aveline other things to consider are their mini albums with songs not on those 3 main albums. So Baby baby, Genie and Hoot
Ave, their Wikipedia page has a pretty comprehensive list of what versions of what album there are. + yesasia has a list right under the description with the same album as different versions.
---------- Post added 2012-12-06 at 01:50 AM ----------