Number Items Grouped in a Query

[lindag]

am trying to get a list of all phone numbers in paperless to use as
de-dup numbers for skip tracing.

I have an access query that pulls several phone numbers listed for a
file. I then grouped by file number and phone number to eliminate
duplicates.

I need help numbering each phone number as seen in the GROUP COUNT
column below......
FILENO PHONE GROUP COUNT
12345 111/111-1111 1
12345 222/222-2222 2
12345 333/333-3333 3

So that I can have the data return as:

FILENO PaperlessPhone1 PaperlessPhone2 PaperlessPhone3....

Any thoughts or suggestions would be greatly appreciated.