All 5 are Eurozone17 members
A5 + Belgium
B6 + Bulgaria + Romania
8 members, 6 of then in Eurozone17
B6 + Germany + Austria + Slovenia
9 members, all Eurozone17 members
D9 + Bulgaria + Romania
11 members, 9 Eurozone17 members
Eurozone17 - Finland - Ireland
15 members, all but 2 of the Eurozone17 members
EU27 minus UK, Hungary, Czech Rep., Sweden
In other words, the 23 that agreed to the Europlus pact a few months ago
More options are possible. Will list them plus put more beef in the 7 ones listed in this post in forthcoming post.
A key "technical" issue is whether a political union should include all Eurozone17 members or could function w/o some Eurozone members.
Plus whether it could include and function including some of the 10 non-Eurozone members.
Interesting, times, too interesting, but EUrope has to move forward., someway, somehow, finally.
Feel free to comment via comments to this post or to http://www.twitter.com/npthinking
There is also an "EU Political Union Now!" group om Facebook.