Numbering Similar Multiple Entires in a Column

I have this spreadsheet on Excel 2007.
In one column all entries are in this pattern (123:456)
That is, within brackets, there are two 3 digit numbers seperatd by a Colon.
Example
(532:123)
(678:890)
(123:456)
(532:123)
(789:004)

What I want is that all similar entries should be numbered, with an 'a', 'b' or 'c' etc

Example
(532:123)a
(678:890)
(123:456)
(532:123)b
(789:004)
(532:123)c

I want a formula that would identify all the similar entries, mark the first such entry with an 'a' (after the bracket), the
second with a 'b' (after the bracket), the third such entry with a 'c' (after the bracket) and so on.

It could eventually look like:
(532:123)a
(678:890)a
(123:456)a
(532:123)b
(789:004)a
(532:123)c
(000:123)
(532:123)d
(678:890)b
(123:456)b
(532:123)e
(789:004)b
(532:123)f

Is this possible?
Thanks

Anwsers to the Problem Numbering Similar Multiple Entires in a Column


Hi Crescent,

In B1 enter =A1&CHAR(COUNTIF($A$1:A1,A1)+96) will mark each value as a, b, ...
while the second formula will only mark values if they occur more than once.

[EDIT] only means that I have edited my answer after the first submit.
Just to keep it all togeter instead posting a second reply.

HTH: hope this help.

Wkr: with kind regards.

Wkr,

JP Ronse


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