Bulk Rename Utility

This should be easy, but I can't figure it out. :/ I need to do a simple renumbering of files. How do I renumber the following six files:

01.jpg
02.jpg
02a.jpg
02b.jpg
03.jpg
03a.jpg

...in the exact same chronological order but be renamed as:

01.jpg
02.jpg
03.jpg
04.jpg
05.jpg
06.jpg

Thanks,
Stephen

You'd need to ensure that the files as listed in BRU are sorted correctly.
Then...

2:Name -> Remove

10:Numbering -> Prefix, Pad:2


If your first wanted filename was not "01", you could adjust for that too in 10:Numbering.