Ok one for the excel nerds (brain isn't working today):

I have a list of items that are used multiple times. i.e.

PD1
PD4
PD4
PD4
PD4
PD5
PD1
etc

Each item number is used mutliple times throughout.

What I want to do is just have a summary of the items used. i.e.

PD1
PD4
PD5

What's an easy way to do this?

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