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.

Assuming array index starts at 0:

for i from 0 to array_length - 2 do
  for j from i + 1 to array_length - 1 do
    print {array[i], array[j]}
  endfor
endfor