Bulk Rename Utility

Hi,
I'm fairly new to Bulk Rename, but i've been working my way though the forum trying to come up with something a little complicated. In short, i need to add an incrementing autonumber after a hyphen, which resets when the text before it changes. For example:

Currently my files look like this:

BRUIEW-intro1
BRUIEW-intro2
BRUIEW-example1
BRUIEW-example2
BRUIWXXY-intro1
BRUIWXXY-example1
BRUIWXXY-example2
BRUIWXXY-example3
BRUIWXXY-example4

But they need to look like this:

BRUIEW-01-intro1
BRUIEW-02-intro2
BRUIEW-03-example1
BRUIEW-04-example2
BRUIWXXY-01-intro1
BRUIWXXY-02-example1
BRUIWXXY-03-example2
BRUIWXXY-04-example3
BRUIWXXY-05-example4

It's been puzzling me for some time, and i've got many thousands of files that'll need renaming in this way.
Any ideas would be great!

Try this.

Numbering (10)
Mode: Suffix
Start: 1
Pad: 2
Sep: -
Break: 5

Rename
Reset

The file names should now have the numbers appended at the end of the file name, e.g. BRUIEW-intro1-01.

To move the added numbers to the correct position.
RegEx (1)
Match: (.*)(-)(.*)(-)(.*)
Replace: \1-\5-\3

The "Break" Option in the Numbering section (10) allows you to reset the numbering when a character changes, for instance in your example the 5th character is the first to change so setting "Break" at 5 resets the numbering at that point.

Also using Javascript renaming you can do this in one pass and it can get as complex as you need.