s the cvs status always shows tags in ordered?

Hi
The output of cvs status -v .  looks like the following:

   Existing Tags:
        E (revision: 1.1.1.1)
        D (revision: 1.1.1.1)
        C (branch: 1.1.1.1.6)
        B (revision: 1.1.1.1)
        A (revision: 1.1.1.1)

Is the order of the tags guaranteed? That is the latest created tag will be
displayed on top, and the oldest one displayed at the bottom?

I'm trying to automate a process where the user input a tag name, the
program will find the "previous" tag and do a cvs diff between the two tags.
For example, if the user enter tag E, then the program should cvs diff tag E
and D automatically.

-- 

Hez