Showing multiple versions of a Major release

I am a little confused on whether this is possible...

First understand that I am using this for my version numbers:
!api%major%minor%patch!extra

EXAMPLE:
3.0.0rc1 = 3^!api.0^%major.0^%minorrc1^!extra

What I need to accomplish is something along these lines, Project Release Table shows:

3.1.0rc3
3.1.0rc2
3.1.0rc1
3.1.0b
3.1.0a
3.0.0

Ultimately when we arrive at the full 3.1.0 then all the variants of 3.1.0x and the 3.0.0 version would drop of course.

BTW, I really wanted to avoid using the minor number at all, but it seems that the rc doesn't work right if there isn't one. This is how I wanted our version numbers to work:

3.1rc3
3.1rc2
3.1rc1
3.1b
3.1a
3.0

Please advise on the best way to accomplish this, if possible. We are testing this for use with a Firefox extension if you can't tell by the numbering.