Einstein 2: Nesting the loops

loops.rb

[:white, :yellow, :blue, :red, :green].permutation.each do |colors|
  [:german, :swedish, :british, :norwegian, :danish,].permutation.each do |nationalities|
    [:birds, :cats, :horses, :fish, :dogs].permutation.each do |pets|       
      [:beer, :water, :tea, :milk, :coffee].permutation.each do |drinks|
        [:blends, :pall_mall, :prince, :bluemasters, :dunhill].permutation.each do |cigars|
          # ...
        end
      end
    end
  end
end