<html><head><meta name="color-scheme" content="light dark"></head><body><pre style="word-wrap: break-word; white-space: pre-wrap;">import itertools as it

a = [1, 2, 3]

print(list(it.combinations(a, 2)))

print(list(it.permutations(a, 2)))

print(list(it.pairwise(a)))
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