Loop all pairs

Let's say I have this array:

{a, b, c, d, e}

How can I look through all the possible pairs?

a, b
a, c
a, d
a, e
b, c
b, d
b, e
c, d
c, e
d, e

Fictional language syntax please.

>fictional language syntax please

Okay. Here's how to do it in my new language.

fsdfSDFsf4r466HGFJGHU7ghjghjgVCVXCVXCVXCVty45ty~~~~~~~~~ERTerertdtdrtetrsegdfG~G@G>>>SDFSD:FALDSLFG&&GGEEEEREE0xFFFFFFFFFFFFFAGGOTsdfsddlfldfldkfldkfkdlfkfkfkfkfF??fd!!!¬¬¬.call(2112);999999999999999999999999999999999999999=2</html>

Just kidding, it's perl.