The version numbering format for XFree86 3.3.x releases is
M is the major version number (3),
m is the
minor version number (3),
n is the sub-minor version number,
x is a letter. Between-release snapshots are indicated by
x, a lower case letter. An exception to this scheme
was the 188.8.131.52 release, which was an update to the 3.3.3 release.
The 3.3 release.
The first post-3.3 development snapshot.
The 3.3.1 release.
The first post-3.3.1 development snapshot.
The 3.3.2 release.
The first post-3.3.2 development snapshot.
The 3.3.3 release.
The first post-3.3.3 development snapshot.
The 184.108.40.206 release.
The first post-220.127.116.11 development snapshot.
The 3.3.4 release.
The first post-3.3.4 snapshot.
The 3.3.5 release.
The first post-3.3.5 snapshot.
The 3.3.6 release.
The first post-3.3.6 snapshot.