>Not very readable to put that after every use of u. This is easier to read > where u = [1..26] do This isn't valid Haskell, but this is let u = [1..2

>Not very readable to put that after every use of u. This is easier to read > where u = [1..26] do This isn't valid Haskell, but this is let u = [1..26] in do ... Also ($) is just sugar to avoid parenthesis. Instead of writing f (1+2*3) you can write f $ 1+2*3 Haskellers have a massive fetish for eliminating parenthesis, perhaps in order to avoid their code looking like lisp.