stem.ex

defmodule Stemmer do
  def stem(word) do
    IO.puts "stemming #{word}"
    case Regex.run(~r/^(.+?)(ASD|QWE)$/u, word) do
      [pattern_matching, like, "ASD"] -> IO.inspect like
      [pattern_matching, like, "QWE"] -> IO.puts "whatever"
    end
  end
end

Stemmer.stem("blabla ASD")
Stemmer.stem("blabla QWE")