[Pharo-users] Iterating through two collections in parallel

What method will execute a two-parameter block with corresponding pairs of elements from two separate Ordered Collections. something like this example: #(1 2 3) and: 'abc' do: [ :aNumber :aLetter | do something first with 1 and $a, then with 2 and $b, and finally with 3 and $c ] I searched for ‘corresponding’ and ‘pairs’ and failed to find what I’m looking for. I tried ‘zip’. It’s hard to search for this with an example. Andrew